ASUS PRIME B550M-K (01) PDF MANUAL


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PDF Content Summary: PRIME B550M-K ii E16604 First Edition April 2020 Copyright © 2020 ASUSTeK COMPUTER INC. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”). Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing. ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT. SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe. Offer to Provide Source Code of Certain Software This product contains copyrighted software that is licensed under the General Public License (“GPL”), under the Lesser General Public License Version (“LGPL”) and/or other Free Open Source Software Licenses. Such software in this product is distributed without any warranty to the extent permitted by the applicable law. Copies of these licenses are included in this product. Where the applicable license entitles you to the source code of such software and/or other additional data, you may obtain it for a period of three years after our last shipment of the product, either (1) for free by downloading it from asus.com/support/ or (2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location where you want to have it shipped to, by sending a request to: ASUSTeK Computer Inc. Legal Compliance Dept. 1F., No.15, Lide Rd., Beitou Dist., Taipei City 112 Taiwan In your request please provide the name, model number and version, as stated in the About Box of the product for which you wish to obtain the corresponding source code and your contact details so that we can coordinate the terms and cost of shipment with you. The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as the corresponding binary/object code. This offer is valid to anyone in receipt of this information. ASUSTeK is eager to duly provide complete source code as required under various Free Open Source Software licenses. If however you encounter any problems in obtaining the full corresponding source code we would be much obliged if you give us a notification to the email address gpl@asus.com, stating the product and describing the problem (please DO NOT send large attachments such as source code archives, etc. to this email address). Contents Safety information ...................................................................................................... iv About this guide .......................................................................................................... v Package contents ....................................................................................................... vi PRIME B550M-K specifications summary................................................................ vi Chapter 1 Product introduction 1.1 Before you proceed ......................................................................................1-1 1.2 Motherboard overview ................................................................................. 1-1 1.3 Central Processing Unit (CPU) ....................................................................1-7 1.4 System memory ............................................................................................1-8 Chapter 2 BIOS and RAID Support 2.1 Knowing BIOS ...............................................................................................2-1 2.2 BIOS setup program .....................................................................................2-2 2.3 ASUS EZ Flash 3 ...........................................................................................2-3 2.4 ASUS CrashFree BIOS 3 ..............................................................................2-4 2.5 RAID configurations .....................................................................................2-5 Appendix Notices ..................................................................................................................... A-1 ASUS contact information ...................................................................................... A-6 iii iv Safety information Electrical safety • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. • When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device. • Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged. • Seek professional assistance before using an adapter or extension cord. These devices could interrupt the grounding circuit. • Ensure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company. • If the power supply is broken, do not try to fix it by yourself. Contact a qualified service technician or your retailer. Operation safety • Before installing the motherboard and adding components, carefully read all the manuals that came with the package. • Before using the product, ensure all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately. • To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry. • Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may be exposed to moisture. • Place the product on a stable surface. • If you encounter technical problems with the product, contact a qualified service technician or your retailer. • Your motherboard should only be used in environments with ambient temperatures between 0°C and 40°C. About this guide This user guide contains the information you need when installing and configuring the motherboard. How this guide is organized This guide contains the following parts: • Chapter 1: Product introduction This chapter describes the features of the motherboard and the new technology it supports. It includes descriptions of the switches, jumpers, and connectors on the motherboard. • Chapter 2: BIOS and RAID Support This chapter tells how to boot into the BIOS, upgrade BIOS using the EZ Flash Utility and support on RAID. Where to find more information Refer to the following sources for additional information and for product and software updates. 1. ASUS website The ASUS website provides updated information on ASUS hardware and software products. Refer to the ASUS contact information. 2. Optional documentation Your product package may include optional documentation, such as warranty flyers, that may have been added by your dealer. These documents are not part of the standard package. Conventions used in this guide To ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual. CAUTION: Information to prevent damage to the components and injuries to yourself when trying to complete a task. IMPORTANT: Instructions that you MUST follow to complete a task. NOTE: Tips and additional information to help you complete a task. v vi Package contents Check your motherboard package for the following items. Motherboard 1 x PRIME B550M-K motherboard Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x I/O Shield 1 x M.2 SSD screw package Application DVD 1 x Support DVD Documentation 1 x User manual If any of the above items is damaged or missing, contact your retailer. PRIME B550M-K specifications summary CPU AMD Socket AM4 for 3rd Gen AMD RyzenTM Processors* *Refer to asus.com for CPU support list. Chipset AMD B550 Chipset Memory 3rd Gen AMD RyzenTM Processors 4 x DIMM, Max. 128GB, DDR4 4400(O.C.)/4000(O.C.)/3866(O.C.)/3600 (O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz, Un-buffered Memory* Dual Channel Memory Architecture *ECC Memory (ECC mode) support varies by CPU. *Refer to asus.com for the Memory QVL (Qualified Vendors Lists). Graphics 1 x D-Sub 1 x DVI-D 1 x HDMITM 2.1(4K@60HZ) Expansion Slots 3rd Gen AMD RyzenTM Processors 1 x PCIe 4.0 x16 slot (supports x16 mode) AMD B550 Chipset 2 x PCIe 3.0 x1 slots Storage Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports 3rd Gen AMD RyzenTM Processors M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes) AMD B550 Chipset M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes) 4 x SATA 6Gb/s ports Support Raid 0, 1, 10 Ethernet 1 x Realtek RTL8111H 1Gb Ethernet (continued on the next page) PRIME B550M-K specifications summary

USB Rear USB (Total 6 ports) 2 x USB 3.2 Gen 2 ports (2 x Type-A) 4 x USB 3.2 Gen 1 ports (4 x Type-A) Front USB (Total 6 ports) 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports Audio Realtek ALC887 7.1-Channel High Definition Audio CODEC* - Supports Jack detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - LED-illuminated audio trace path design - Premium Japanese audio capacitors - Dedicated audio PCB layers * A chassis with an HD audio module in the front panel is required to support 7.1-channel audio output. Back Panel I/O Ports 2 x USB 3.2 Gen 2 ports (2 x Type-A) 4 x USB 3.2 Gen 1 ports (4 x Type-A) 1 x D-Sub port 1 x DVI-D port 1 x HDMITM port 1 x Realtek RTL8111H 1Gb Ethernet port 3 x Audio jacks 1 x PS/2 Keyboard/Mouse combo port Internal I/O Connectors Fan and cooling related 1 x 4-pin CPU Fan header 2 x 4-pin Chassis Fan headers Power related 1 x 24-pin Main Power connector 1 x 8-pin +12V Power connector Storage related 2 x M.2 slots (Key M) 4 x SATA 6Gb/s ports USB 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports Miscellaneous 1 x Clear CMOS header 1 x COM Port header 1 x Front Panel Audio header (AAFP) 1 x S/PDIF Out header 1 x Speaker header 1 x SPI TPM header (14-1pin) 1 x 10-1 pin System Panel header (continued on the next page) vii

viii PRIME B550M-K specifications summary Special Features ASUS 5X PROTECTION III - ASUS DIGI+ VRM - ASUS LANGuard - ASUS Overvoltage Protection - ASUS SafeSlot Core - ASUS Stainless-Steel Back I/O ASUS Q-Design - ASUS Q-DIMM - ASUS Q-Slot ASUS Thermal Solution - Aluminum heatsink design ASUS Lighting Control Software Features ASUS Exclusive Software Armoury Crate AI Suite 3 - Performance And Power Saving Utility TurboV EVO EPU Digi+ VRM Fan Xpert 2+ - EZ update ASUS CPU-Z AI Charger DAEMON Tools Norton Anti-virus software (Free Trial for 60 days) WinRAR UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode BIOS 256 Mb Flash ROM, UEFI AMI BIOS Manageability WOL by PME, PXE Operating System Windows® 10 - 64 bit Form Factor mATX Form Factor 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm ) Specifications are subject to change without notice. Refer to the ASUS website for the latest specifications.

Product introduction 1 1.1 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings. • Unplug the power cord from the wall socket before touching any component. • Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity. • Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, or components. 1.2 Motherboard overview 5 4 15 1 4 2 24.4cm(9.6in) KBMS _U32G1 _78 EATX12V DIGI+ VRM HDMI Place this side towards the rear of the chassis ) eludomn ip-882, tib46(1 A_MMID4 RDDUnplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components. ) eludomn ip-882, tib46(* 2A_MMID4 RDD) eludomn ip-882, tib46(1 B_MMID4 RDD) eludomn ip-882, tib46(* 2B_MMID4 RDDR WPXTAE9 1614 7 ) ni6.9(mc4.42AUDIORTL 8111H ALC 887 2 1_1G23USuper I/O PCIEX1_1 PCIEX1_2 CHA_FAN2 CPU_FAN U32G2_56 5 LAN_U32G1_34 BATTERY TPM 1 NAF_AHC256Mb BIOS 86 22110 2280 2260 2242 )3TEKCOS(1_2.MPCIEX16 63 2280 2260 2242 COM_DEBUG ) 3TEKCOS(2_2.MAMD B550 10SPEAKER COM USB12 USB34 AAFP F_PANEL 13 12 11 4 CLRTC SPDIF_OUT SATA6G_4 SATA6G_3 SATA6G_2 SATA6G_1 ASUS PRIME B550M-K 1-1

1.2.1 Layout contents 1. CPU socket The motherboard comes with an AMD Socket AM4 designed for 3rd Gen AMD RyzenTM Processors. For more details, refer to Central Processing Unit (CPU). 2. DDR4 DIMM slots The motherboard comes with Dual Inline Memory Modules (DIMM) slots designed for DDR4 (Double Data Rate 4) memory modules. For more details, refer to System memory. 3. Expansion slots This motherboard supports one PCIe x16 graphics card and two PCIe 3.0 x1 network cards, SCSI cards and other cards that comply with the PCI Express specification. 4. Fan headers The Fan headers allow you to connect fans to cool the system. 5. Power connectors These Power connectors allow you to connect your motherboard to a power supply. The power supply plugs are designed to fit in only one orientation. Find the proper orientation and push down firmly until the power supply plugs are fully inserted. Ensure to connect the 8-pin power plug. • For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12V Specification 2.0 (or later version) and provides a minimum power of 350W. • We recommend that you use a PSU with a higher power output when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate. • If you are uncertain about the minimum power supply requirement for your system, we recommend you to refer to online resources for Power Supply Wattage Calculator. 6. M.2 Slots (Key M) The M.2 slots allow you to install M.2 devices such as M.2 SSD modules. • For 3rd Gen AMD RyzenTM Processors,M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 & SATA modes). • For AMD B550 Chipset, M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes). 7. SATA 6Gb/s ports The SATA 6Gb/s ports allow you to connect SATA devices such as optical disc drives and hard disk drives via a SATA cable. R M D NGWPN AFN IWPN AFN AFFAN PWM FAN IN FAN PWR GND 1-2 Chapter 1: Product introduction 8. USB 3.2 Gen 1 header The USB 3.2 Gen 1 header allows you to connect a USB 3.2 Gen 1 module for additional USB 3.2 Gen 1 ports. The USB 3.2 Gen 1 header provides data transfer speeds of up to 5 Gb/s. The USB 3.2 Gen 1 module is purchased separately. PIN 1 USB3+5V IntA_P2_SSRX- IntA_P2_SSRX+ GND IntA_P2_SSTX- IntA_P2_SSTX+ GND IntA_P2_D- IntA_P2_D+ USB3+5V IntA_P1_SSRX- IntA_P1_SSRX+ GND IntA_P1_SSTX- IntA_P1_SSTX+ GND IntA_P1_D- IntA_P1_D+ GND USB3+5V IntA_P1_SSRX- IntA_P1_SSRX+ GND IntA_P1_SSTX- IntA_P1_SSTX+ GND IntA_P1_D- IntA_P1_D+ GND 9. USB 2.0 headers The USB 2.0 headers allow you to connect USB modules for additional USB 2.0 ports. The USB 2.0 headers provide data transfer speeds of up to 480 Mb/s. DO NOT connect a 1394 cable to the USB connectors. Doing so will damage the motherboard! The USB 2.0 module is purchased separately. 10. Clear CMOS header This header allows you to clear the CMOS RTC RAM data of the system setup information such as date, time, and system passwords. To erase the RTC RAM: 1. Turn OFF the computer and unplug the power cord. 2. Use a metal object such as a screwdriver to short the two pins. 3. Plug the power cord and turn ON the computer. PIN 1CLRTC PIN 1

4. Hold down the <Del> key during the boot process and enter BIOS setup to re- enter data. If the steps above do not help, remove the onboard battery and short the two pins again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.

11. COM Port header This header is for a serial (COM) port. Connect the serial port module cable to this header, then install the module to a slot opening at the back of the system chassis. 12. Front panel audio header This header is for a chassis-mounted front panel audio I/O module that supports HD audio standard. Connect one end of the front panel audio I/O module cable to this header. PIN 1 COM S D R R R R R • We recommend that you connect a high-definition front panel audio module to this header to avail of the motherboard’s high- definition audio capability. • If you want to connect a high-definition front panel audio module to this header, set the Front Panel Type item in the BIOS setup to [HD Audio]. By default, this header is set to [HD Audio]. RTXCNTRDGAAFP HD-audio-compliant pin definition TTXSCDRDI S D D D D

ASUS PRIME B550M-K 1-3 13. S/PDIF Out header This header is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect the S/PDIF Out module cable to this header, then install the module to a slot opening at the back of the system chassis. 14. Speaker header The 4-pin header is for the chassis-mounted system warning speaker. The speaker allows you to hear system beeps and warnings. 15. SPI TPM header This header supports a Trusted Platform Module (TPM) system with a Serial Peripheral Interface (SPI), allowing you to securely store keys, digital certificates, passwords, and data. A TPM system also helps enhance network security, protects digital identities, and ensures platform integrity. 16. 10-1 pin System Panel header This header supports several chassis-mounted functions. • System power LED (2-pin +PWR_LED-) This 2-pin header is for the system power LED. Connect the chassis power LED cable to this header. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode. • Hard disk drive activity LED (2-pin +HDD_LED-) This 2-pin header is for the HDD Activity LED. Connect the HDD Activity LED cable to this header. The HDD LED lights up or flashes when data is read from or written to the HDD. • Power button/Soft-off button (2-pin PWR_BTN) This header is for the system power button. • Reset button (2-pin RESET) This 2-pin header is for the chassis-mounted reset button for system reboot without turning off the system power. SPDIF_OUT SPEAKER PIN 1 PIN 1 TPM F_PANEL +PWR_LED- PWR_BTN PIN 1 +HDD_LED- RESET 1-4 Chapter 1: Product introduction 1.2.2 Rear panel connectors 1 2 3 4 5 6 7 8 9 6 10 1. PS/2 Keyboard/Mouse combo port. This port is for a PS/2 keyboard or mouse. 2. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other VGA-compatible devices. 3. Ethernet port. This port allows Gigabit connection to a Local Area Network (LAN) through a network hub. Refer to the table below for the Ethernet port LED indications. Ethernet port LED indications Activity/Link LED Speed LED Activity LED Link Speed LED Status Description Status Description Off No link Off 10Mbps connection Orange Linked Orange 100Mbps connection Orange (Blinking) Data activity Green 1Gbps connection Orange (Blinking Ethernet port then steady) 4. Line In port (light blue). This port connects the tape, CD, DVD player, or other audio sources. 5. Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, 5.1-channel, and 7.1-channel configurations, the function of this port becomes Front Speaker Out. 6. USB 3.2 Gen 1 (up to 5Gbps) ports. These 9-pin Universal Serial Bus (USB) ports connect to USB 3.2 Gen 1 devices. 7. DVI-D port. This port is for any DVI-D compatible device. DVI-D can not be converted to output from RGB Signal to CRT and is not compatible with DVI-I. 8. HDMITM port. This port is for a High-Definition Multimedia Interface (HDMITM) connector, and is HDCP compliant allowing playback of HD DVD, Blu-ray, and other protected content. Ready to wake up from S5 mode ASUS PRIME B550M-K 1-5 9. USB 3.2 Gen 2 (up to 10Gbps) ports (teal blue, Type A). These 9-pin Universal Serial Bus 3.2 (USB 3.2) ports are for USB 3.2 Gen 2 devices. 10. Microphone port (pink). This port connects a microphone. Refer to the audio configuration table for the function of the audio ports in 2, 4, 5.1, or 7.1-channel configuration. Audio 2, 4, 5.1 or 7.1-channel configuration Port Headset 2-channel 4-channel 5.1-channel 7.1-channel Light Blue (Rear panel) Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out Lime (Rear panel) Line Out Front Speaker Out Front Speaker Out Front Speaker Out Pink (Rear panel) Mic In Mic In Bass/Center Bass/Center Lime (Front panel) — — — Side Speaker Out To configure a 7.1-channel audio output: Use a chassis with HD audio module in the front panel to support a 7.1-channel audio output. 1-6 Chapter 1: Product introduction 1.3 Central Processing Unit (CPU) The motherboard comes with an AMD Socket AM4 designed for 3rd Gen AMD RyzenTM Processors. Unplug all power cables before installing the CPU. The AM4 socket has a different pinout design. Ensure that you use a CPU designed for the AM4 socket. The CPU fits in only one correct orientation. DO NOT force the CPU into the socket to prevent bending the connectors on the socket and damaging the CPU! Installing the CPU Apply the Thermal Interface Material to the CPU heatsink and CPU before you install the heatsink and fan if necessary. 12 3 4 ASUS PRIME B550M-K 1-7 1.4 System memory This motherboard comes with four Double Data Rate 4 (DDR4) Dual Inline Memory Module (DIMM) sockets. The figure illustrates the location of the DDR4 DIMM sockets: DIMM_A1 Channel Sockets DIMM_A2* Channel A DIMM_A1 & DIMM_A2* DIMM_B1 DIMM_B2* Channel B DIMM_B1 & DIMM_B2* • You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation. • Always install DIMMs with the same CAS latency. For optimal compatibility, we recommend that you install memory modules of the same version or date code (D/C) from the same vendor. Check with the retailer to get the correct memory modules. • A DDR4 memory module is notched differently from a DDR, DDR2, or DDR3 module. DO NOT install a DDR, DDR2, or DDR3 memory module to the DDR4 slot. • The default memory operation frequency is dependent on its Serial Presence Detect(SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. • For system stability, use a more efficient memory cooling system to support a full memory load (4 DIMMs). • Refer to asus.com for the latest Memory QVL (Qualified Vendors Lists). Recommended memory configuration DIMM_B2* DIMM_A1 DIMM_A2*DIMM_B2* DIMM_A2* DIMM_B1 DIMM_B2* 1-8 Chapter 1: Product introduction

Installing a DIMM 1 2 A B To remove a DIMM B A A

ASUS PRIME B550M-K 1-9 1-10 Chapter 1: Product introduction BIOS and RAID Support 2 2.1 Knowing BIOS The new ASUS UEFI BIOS is a Unified Extensible Interface that complies with UEFI architecture, offering a user-friendly interface that goes beyond the traditional keyboard- only BIOS controls to enable a more flexible and convenient mouse input. You can easily navigate the new UEFI BIOS with the same smoothness as your operating system. The term “BIOS” in this user manual refers to “UEFI BIOS” unless otherwise specified. BIOS (Basic Input and Output System) stores system hardware settings such as storage device configuration, overclocking settings, advanced power management, and boot device configuration that are needed for system startup in the motherboard CMOS. In normal circumstances, the default BIOS settings apply to most conditions to ensure optimal performance. DO NOT change the default BIOS settings except in the following circumstances: • An error message appears on the screen during the system bootup and requests you to run the BIOS Setup. • You have installed a new system component that requires further BIOS settings or update.Inappropriate BIOS settings may result to instability or boot failure. We strongly recommend that you change the BIOS settings only with the help of a trained service personnel. • When downloading or updating the BIOS file, rename it as PB550MK.CAP for this motherboard. • BIOS settings and options may vary due to different BIOS release versions. Please refer to the latest BIOS version for settings and options. For more information on BIOS configurations, please refer to asus.com/support, or download the BIOS manual by scanning the QR code. ASUS PRIME B550M-K 2-1 2.2 BIOS setup program Use the BIOS Setup to update the BIOS or configure its parameters. The BIOS screens include navigation keys and brief onscreen help to guide you in using the BIOS Setup program. Entering BIOS at startup To enter BIOS Setup at startup, press <Delete> or <F2> during the Power-On Self Test (POST). If you do not press <Delete> or <F2>, POST continues with its routines. Entering BIOS Setup after POST To enter BIOS Setup after POST: • Press <Ctrl>+<Alt>+<Delete> simultaneously. • Press the reset button on the system chassis. • Press the power button to turn the system off then back on. Do this option only if you failed to enter BIOS Setup using the first two options. After doing either of the three options, press <Delete> key to enter BIOS. • Ensure that a USB mouse is connected to your motherboard if you want to use the mouse to control the BIOS setup program. • If the system becomes unstable after changing any BIOS setting, load the default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu or press hotkey <F5>. • If the system fails to boot after changing any BIOS setting, try to clear the CMOS and reset the motherboard to the default value. • The BIOS setup program does not support Bluetooth devices. BIOS menu screen The BIOS Setup program can be used under two modes: EZ Mode and Advanced Mode. You can change modes from Setup Mode in Boot menu or by pressing the <F7> hotkey. 2-2 Chapter 2: BIOS and RAID Support 2.3 ASUS EZ Flash 3 The ASUS EZ Flash 3 feature allows you to update the BIOS without using an OS-based utility. Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu or press hotkey <F5>. To update the BIOS by USB: • This function can support devices such as a USB flash disk with FAT 32/16 format and single partition only. • DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure! 1. Insert the USB flash disk that contains the latest BIOS file to the USB port. 2. Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select ASUS EZ Flash 3 Utility and press <Enter>. 3. Select via Storage Device(s). 4. Press <Tab> to switch to the Drive field. 5. Press the Up/Down arrow keys to find the USB flash disk that contains the latest BIOS, and then press <Enter>. 6. Press <Tab> to switch to the Folder field. 7. Press the Up/Down arrow keys to find the BIOS file, and then press <Enter> to perform the BIOS update process. Reboot the system when the update process is done. ASUS PRIME B550M-K 2-3 2.4 ASUS CrashFree BIOS 3 The ASUS CrashFree BIOS 3 utility is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using a USB flash drive that contains the BIOS file. If you want to use the latest BIOS file, download the file at asus.com/support, and save it to a USB flash drive. Recovering the BIOS To recover the BIOS: 1. Turn on the system. 2. Insert the USB flash drive containing the BIOS file to the USB port. 3. The utility automatically checks the devices for the BIOS file. When found, the utility reads the BIOS file and enters ASUS EZ Flash 3 automatically. 4. The system requires you to enter BIOS Setup to recover the BIOS setting. To ensure system compatibility and stability, we recommend that you press <F5> to load default BIOS values. DO NOT shut down or reset the system while updating the BIOS! Doing so can cause system boot failure! 2-4 Chapter 2: BIOS and RAID Support 2.5 RAID configurations The motherboard supports RAID 0, RAID1, and RAID10 configuration. For more information on configuring your RAID sets, please refer to the RAID Configuration Guide which you can find at asus.com/support, or by scanning the QR code. RAID definitions RAID 0 (Data striping) optimizes two identical hard disk drives to read and write data in parallel, interleaved stacks. Two hard disks perform the same work as a single drive but at a sustained data transfer rate, double that of a single disk alone, thus improving data access and storage. Use of two new identical hard disk drives is required for this setup. RAID 1 (Data mirroring) copies and maintains an identical image of data from one drive to a second drive. If one drive fails, the disk array management software directs all applications to the surviving drive as it contains a complete copy of the data in the other drive. This RAID configuration provides data protection and increases fault tolerance to the entire system. Use two new drives or use an existing drive and a new drive for this setup. The new drive must be of the same size or larger than the existing drive. RAID 10 is data striping and data mirroring combined without parity (redundancy data) having to be calculated and written. With the RAID 10 configuration you get all the benefits of both RAID 0 and RAID 1 configurations. Use four new hard disk drives or use an existing drive and three new drives for this setup. ASUS PRIME B550M-K 2-5 2-6 Chapter 2: BIOS and RAID Support Appendix Notices FCC Compliance Information Responsible Party: Asus Computer International Address: 48720 Kato Rd., Fremont, CA 94538, USA Phone / Fax No: (510)739-3777 / (510)608-4555 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. ASUS PRIME B550M-K A-1 Compliance Statement of Innovation, Science and Economic Development Canada (ISED) This device complies with Innovation, Science and Economic Development Canada licence exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. CAN ICES-3(B)/NMB-3(B) Déclaration de conformité de Innovation, Sciences et Développement économique Canada (ISED) Le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes : (1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement. CAN ICES-3(B)/NMB-3(B) VCCI: Japan Compliance Statement Class B ITE A-2 Appendices KC: Korea Warning Statement GoogleTM License Terms Copyright© 2020 Google Inc. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at: apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. Declaration of compliance for product environmental regulation ASUS follows the green design concept to design and manufacture our products, and makes sure that each stage of the product life cycle of ASUS product is in line with global environmental regulations. In addition, ASUS disclose the relevant information based on regulation requirements. Please refer to csr.asus.com/Compliance.htm for information disclosure based on regulation requirements ASUS is complied with: EU REACH and Article 33 Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) regulatory framework, we published the chemical substances in our products at ASUS REACH website at csr.asus.com/english/REACH.htm. EU RoHS This product complies with the EU RoHS Directive. For more details, see csr.asus.com/english/article.aspx?id=35 India RoHS This product complies with the “India E-Waste (Management) Rules, 2016” and prohibits use of lead, mercury, hexavalent chromium, polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) in concentrations exceeding 0.1% by weight in homogenous materials and 0.01% by weight in homogenous materials for cadmium, except for the exemptions listed in Schedule II of the Rule. Vietnam RoHS ASUS products sold in Vietnam, on or after September 23, 2011,meet the requirements of the Vietnam Circular 30/2011/TT-BCT. Các sản phẩm ASUS bán tại Việt Nam, vào ngày 23 tháng 9 năm2011 trở về sau, đều phải đáp ứng các yêu cầu của Thông tư 30/2011/TT-BCT của Việt Nam. Turkey RoHS AEEE Yönetmeliğine Uygundur ASUS PRIME B550M-K A-3 ASUS Recycling/Takeback Services ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components as well as the packaging materials. Please go to csr.asus.com/english/Takeback.htm for detailed recycling information in different regions. DO NOT throw the motherboard in municipal waste. This product has been designed to enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin indicates that the product (electrical and electronic equipment) should not be placed in municipal waste. Check local regulations for disposal of electronic products. DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol of the crossed out wheeled bin indicates that the battery should not be placed in municipal waste. Regional notice for California WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov A-4 Appendices Română English ASUSTeK Computer Inc. hereby declares that this device is in ASUSTeK Computer Inc. declară că acest dispozitiv se conformează compliance with the essential requirements and other relevant provisions of cerinţelor esenţiale şi altor prevederi relevante ale directivelor conexe. Textul related Directives. Full text of EU declaration of conformity is available at: complet al declaraţiei de conformitate a Uniunii Europene se găseşte la: asus.com/support asus.com/support Français AsusTek Computer Inc. déclare par la présente que cet appareil est Srpski ASUSTeK Computer Inc. ovim izjavljuje da je ovaj uređaj u saglasnosti conforme aux critères essentiels et autres clauses pertinentes des directives sa osnovnim zahtevima i drugim relevantnim odredbama povezanih Direktiva. concernées. La déclaration de conformité de l’UE peut être téléchargée à Pun tekst EU deklaracije o usaglašenosti je dostupan da adresi: partir du site Internet suivant : asus.com/support asus.com/support Deutsch ASUSTeK Computer Inc. erklärt hiermit, dass dieses Gerät mit Slovensky Spoločnosť ASUSTeK Computer Inc. týmto vyhlasuje, že toto den wesentlichen Anforderungen und anderen relevanten Bestimmungen zariadenie vyhovuje základným požiadavkám a ostatým príslušným der zugehörigen Richtlinien übereinstimmt. Der gesamte Text der EU- ustanoveniam príslušných smerníc. Celý text vyhlásenia o zhode pre štáty EÚ Konformitätserklärung ist verfügbar unter: asus.com/support je dostupný na adrese: asus.com/support Italiano ASUSTeK Computer Inc. con la presente dichiara che questo Slovenščina ASUSTeK Computer Inc. izjavlja, da je ta naprava skladna z dispositivo è conforme ai requisiti essenziali e alle altre disposizioni bistvenimi zahtevami in drugimi ustreznimi določbami povezanih direktiv. pertinenti con le direttive correlate. Il testo completo della dichiarazione di Celotno besedilo EU-izjave o skladnosti je na voljo na spletnem mestu: conformità UE è disponibile all’indirizzo: asus.com/support asus.com/support Русский Компания ASUS заявляет, что это устройство соответствует Español Por la presente, ASUSTeK Computer Inc. declara que este dispositivo основным требованиям и другим соответствующим условиям cumple los requisitos básicos y otras disposiciones pertinentes de las соответствующих директив. Подробную информацию, пожалуйста, directivas relacionadas. El texto completo de la declaración de la UE de смотрите на asus.com/support conformidad está disponible en: asus.com/support Български С настоящото ASUSTeK Computer Inc. декларира, че това Svenska ASUSTeK Computer Inc. förklarar härmed att denna устройство е в съответствие със съществените изисквания и другите enhet överensstämmer med de grundläggande kraven och andra приложими постановления на свързаните директиви. Пълният текст на relevanta föreskrifter i relaterade direktiv. Fulltext av EU-försäkran om декларацията за съответствие на ЕС е достъпна на адрес: överensstämmelse finns på: asus.com/support asus.com/support Українська ASUSTeK Computer Inc. заявляє, що цей пристрій відповідає Hrvatski ASUSTeK Computer Inc. ovim izjavljuje da je ovaj uređaj sukladan основним вимогам та іншим відповідним положенням відповідних s bitnim zahtjevima i ostalim odgovarajućim odredbama vezanih direktiva. Директив. Повний текст декларації відповідності стандартам ЄС доступний Cijeli tekst EU izjave o sukladnosti dostupan je na: asus.com/support на: asus.com/support Čeština Společnost ASUSTeK Computer Inc. tímto prohlašuje, že Türkçe AsusTek Computer Inc., bu aygıtın temel gereksinimlerle ve ilişkili toto zařízení splňuje základní požadavky a další příslušná ustanovení Yönergelerin diğer ilgili koşullarıyla uyumlu olduğunu beyan eder. AB souvisejících směrnic. Plné znění prohlášení o shodě EU je k dispozici na uygunluk bildiriminin tam metni şu adreste bulunabilir: adrese: asus.com/support asus.com/support Dansk ASUSTeK Computer Inc. erklærer hermed, at denne enhed er i Bosanski ASUSTeK Computer Inc. ovim izjavljuje da je ovaj uređaj usklađen overensstemmelse med hovedkravene og andre relevante bestemmelser i sa bitnim zahtjevima i ostalim odgovarajućim odredbama vezanih direktiva. de relaterede direktiver. Hele EU-overensstemmelseserklæringen kan findes Cijeli tekst EU izjave o usklađenosti dostupan je na: asus.com/support på: asus.com/support Nederlands ASUSTeK Computer Inc. verklaart hierbij dat dit apparaat voldoet aan de essentiële vereisten en andere relevante bepalingen van de verwante richtlijnen. De volledige tekst van de EU-verklaring van conformiteit is beschikbaar op: asus.com/support Eesti Käesolevaga kinnitab ASUSTeK Computer Inc, et see seade vastab asjakohaste direktiivide oluliste nõuetele ja teistele asjassepuutuvatele sätetele. EL vastavusdeklaratsiooni täielik tekst on saadaval järgmisel aadressil: asus.com/support Suomi ASUSTeK Computer Inc. ilmoittaa täten, että tämä laite on asiaankuuluvien direktiivien olennaisten vaatimusten ja muiden tätä koskevien säädösten mukainen. EU-yhdenmukaisuusilmoituksen koko teksti on luettavissa osoitteessa: asus.com/support Ελληνικά Με το παρόν, η AsusTek Computer Inc. δηλώνει ότι αυτή η συσκευή συμμορφώνεται με τις θεμελιώδεις απαιτήσεις και άλλες σχετικές διατάξεις των Οδηγιών της ΕΕ. Το πλήρες κείμενο της δήλωσης συμβατότητας είναι διαθέσιμο στη διεύθυνση: asus.com/support Magyar Az ASUSTeK Computer Inc. ezennel kijelenti, hogy ez az eszköz megfelel a kapcsolódó Irányelvek lényeges követelményeinek és egyéb vonatkozó rendelkezéseinek. Az EU megfelelőségi nyilatkozat teljes szövege innen letölthető: asus.com/support Latviski ASUSTeK Computer Inc. ar šo paziņo, ka šī ierīce atbilst saistīto Direktīvu būtiskajām prasībām un citiem citiem saistošajiem nosacījumiem. Pilns ES atbilstības paziņojuma teksts pieejams šeit: asus.com/support Lietuvių „ASUSTeK Computer Inc.“ šiuo tvirtina, kad šis įrenginys atitinka pagrindinius reikalavimus ir kitas svarbias susijusių direktyvų nuostatas. Visą ES atitikties deklaracijos tekstą galima rasti: asus.com/support Norsk ASUSTeK Computer Inc. erklærer herved at denne enheten er i samsvar med hovedsaklige krav og andre relevante forskrifter i relaterte direktiver. Fullstendig tekst for EU-samsvarserklæringen finnes på: asus.com/support Polski Firma ASUSTeK Computer Inc. niniejszym oświadcza, że urządzenie to jest zgodne z zasadniczymi wymogami i innymi właściwymi postanowieniami powiązanych dyrektyw. Pełny tekst deklaracji zgodności UE jest dostępny pod adresem: asus.com/support Português A ASUSTeK Computer Inc. declara que este dispositivo está em conformidade com os requisitos essenciais e outras disposições relevantes das Diretivas relacionadas. Texto integral da declaração da UE disponível em: asus.com/support ASUS PRIME B550M-K A-5 ASUS contact information ASUSTeK COMPUTER INC. Address 1F., No. 15, Lide Rd., Beitou Dist., Taipei City 112, Taiwan Telephone +886-2-2894-3447 Fax +886-2-2890-7798 Web site asus.com Technical Support Telephone +86-21-38429911 Online support qr.asus.com/techserv ASUS COMPUTER INTERNATIONAL (America) Address 48720 Kato Rd., Fremont, CA 94538, USA Telephone +1-510-739-3777 Fax +1-510-608-4555 Web site asus.com/us/ Technical Support Support fax +1-812-284-0883 Telephone +1-812-282-2787 Online support qr.asus.com/techserv ASUS COMPUTER GmbH (Germany and Austria) Address Harkortstrasse 21-23, 40880 Ratingen, Germany Web site asus.com/de Online contact asus.com/support/Product/ContactUs/ Services/questionform/?lang=de-de Technical Support Telephone (DE) +49-2102-5789557 Telephone (AT) +43-1360-2775461 Online support asus.com/de/support A-6 Appendices


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