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PRIME
B550-PLUS
Motherboard
E16536
First Edition
May 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 https://www.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).
ii
Contents
Safety information...................................................................................................... |
iv |
About this guide........................................................................................................... |
v |
Package contents....................................................................................................... |
vi |
PRIME B550-PLUS specifications summary............................................................ |
vi |
Connectors with shared bandwidth........................................................................... |
x |
Chapter 1 |
Product introduction |
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1.1 |
Before you proceed...................................................................................... |
1-1 |
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1.2 |
Motherboard overview.................................................................................. |
1-1 |
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1.3 |
Central Processing Unit (CPU).................................................................... |
1-9 |
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1.4 |
System memory.......................................................................................... |
1-10 |
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1.5 |
M.2 installation............................................................................................ |
1-11 |
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Chapter 2 |
BIOS and RAID Support |
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2.1 |
Knowing BIOS............................................................................................... |
2-1 |
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2.2 |
BIOS setup program..................................................................................... |
2-2 |
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2.3 |
ASUS EZ Flash 3........................................................................................... |
2-3 |
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2.4 |
ASUS CrashFree BIOS 3............................................................................... |
2-4 |
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2.5 |
RAID configurations..................................................................................... |
2-5 |
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Appendix |
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Notices...................................................................................................................... |
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A-1 |
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ASUS contact information...................................................................................... |
A-6 |
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iii
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.
iv
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
Package contents
Check your motherboard package for the following items.
Motherboard |
1 x PRIME B550-PLUS motherboard |
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Cables |
2 x SATA 6Gb/s cables |
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Miscellaneous |
1 x I/O Shield |
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1 x M.2 SSD screw package |
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Application DVD |
1 x Support DVD |
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Documentation |
1 x User manual |
If any of the above items is damaged or missing, contact your retailer.
PRIME B550-PLUS specifications summary
CPU |
AMD Socket AM4 for 3rd Gen AMD Ryzen™ Processors* |
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*Refer to www.asus.com for CPU support list. |
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Chipset |
AMD B550 Chipset |
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3rd Gen AMD Ryzen™ Processors |
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4 x DIMM, Max. 128GB, DDR4 4400(O.C)/4000(O.C)/3866(O.C)/3600(O.C)/ |
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Memory |
3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz, Un-buffered Memory* |
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Dual Channel Memory Architecture |
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Graphics
Expansion Slots
Multi-GPU Support
Storage
*ECC Memory (ECC mode) support varies by CPU.
**Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
1 x DisplayPort 1.2
1 x HDMITM 2.1(4K@60HZ)
*Graphics specifications may vary between CPU types.
3rd Gen AMD Ryzen™ Processors
1 x PCIe 4.0 x16 slot (supports x16 mode)
AMD B550 Chipset
1 x PCIe 3.0 x16 slot (supports x4 mode)*
3 x PCIe 3.0 x1 slots**
*Support PCIe bifurcation for RAID on CPU function.
**PCIE 3.0 X16_2 runs x2 mode when PCIEX1_2 or PCIEX1_3 is occupied.
Supports AMD 2-Way CrossFireX™ Technology
Total supports 2 x M.2 slots and 6 x SATA 6Gb/s ports 3rd Gen AMD Ryzen™ 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 2242/2260/2280/22110
(supports PCIe 3.0 x4 & SATA modes)*
6 x SATA 6Gb/s ports Support Raid 0, 1, 10
*M2_2 shares bandwidth with SATA6G_56. When M.2_2 is populated, SATA6G_56 will be disabled.
(continued on the next page)
vi
PRIME B550-PLUS specifications summary
Ethernet
USB
Audio
Back Panel I/O Ports
Internal I/O
Connectors
1 x Realtek RTL8111H 1Gb Ethernet
Rear USB (Total 8 ports)
2 x USB 3.2 Gen 2 ports (1 x Type-A + 1 x USB Type-C®) 4 x USB 3.2 Gen 1 ports (4 x Type-A)
2 x USB 2.0 ports (2 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
Realtek ALC 887 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
-Unique de-pop circuit
2 x USB 3.2 Gen 2 ports (1 x Type-A + 1 x USB Type-C®) 4 x USB 3.2 Gen 1 ports (4 x Type-A)
2 x USB 2.0 ports (2 x Type-A)
1 x DisplayPort
1 x HDMITM port
1 x Realtek 8111H Ethernet port
5 x Audio jacks
1 x Optical S/PDIF out port
Fan and cooling related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
3 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)
6 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
(continued on the next page)
vii
PRIME B550-PLUS specifications summary
Internal I/O
Connectors
Special Features
Software
Features
Miscellaneous
1 x AURA Addressable Gen 2 header
2 x AURA RGB headers
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (AAFP)
1 x SPI TPM header (14-1pin)
1 x 20-3 pin System Panel header with Chassis intrude function
1 x Thermal Sensor header
1 x Thunderbolt header
ASUS 5X PROTECTION III
-ASUS DIGI+ VRM
-ASUS Enhanced DRAM Overcurrent Protection
-ASUS ESD Guards
-ASUS LANGuard
-ASUS Overvoltage Protection
-ASUS SafeSlot Core
-ASUS Stainless-Steel Back I/O
ASUS Q-Design
-ASUS Q-DIMM
-ASUS Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green])
-ASUS Q-Slot
ASUS Thermal Solution
- Aluminum heatsink design
ASUS EZ DIY
- SafeSlot
AURA Sync
-Standard RGB headers
-Addressable Gen 2 RGB header
ASUS Exclusive Software
Armoury Crate
-Aura Creator
-Aura Sync
AI Suite 3
-Performance And Power Saving Utility
TurboV EVO EPU
Digi+ VRM
Fan Xpert 4
-EZ update
ASUS CPU-Z
AI Charger
DAEMON Tools
Norton Anti-virus software (Free Trial for 60 days)
WinRAR
(continued on the next page)
viii
PRIME B550-PLUS specifications summary
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UEFI BIOS |
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Software |
ASUS EZ DIY |
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- |
ASUS CrashFree BIOS 3 |
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Features |
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- |
ASUS EZ Flash 3 |
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- ASUS UEFI BIOS EZ Mode |
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BIOS |
256 Mb Flash ROM, UEFI AMI BIOS |
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Manageability |
WOL by PME, PXE |
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Operating |
Windows® 10 - 64 bit |
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System |
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Form Factor
ATX Form Factor
12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )
Specifications are subject to change without notice. Refer to the ASUS website for the latest specifications.
ix
Connectors with shared bandwidth
RGB_HEADER1
U32G2_C4 |
CPU_FAN CPU_OPT |
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EATX12V |
DIGI+ |
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VRM |
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U32G2_3 |
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LAN_U32G1_56 |
Realtek |
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8111H |
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HDMI |
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_DP |
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U2_56U32G1_78 |
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AUDIO |
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CHAFAN1 |
AIOPUMP |
TPM |
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256Mb |
_ |
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BIOS |
SPI |
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22110 |
2280 |
2260 |
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PCIEX16_1
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SOCKET AM4 |
2242 |
1(SOCKET3) |
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M.2_ |
A1 (64bit, 288-pin module) |
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A2* (64bit, 288-pin module) |
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B1 (64bit, 288-pin module) |
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B2* (64bit, 288-pin module) |
DDR4 DIMM_ |
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DDR4 DIMM_ |
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DDR4 DIMM_ |
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DDR4 DIMM_ |
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BOOT
VGA
CPU
DRAM
EATXPWR |
U32G1_12
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AMD |
SATA6G 12 |
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34 |
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BATTERY |
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B550 |
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Super |
PCIEX1_1 |
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SATA6G |
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I/O |
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56 |
A |
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PCIEX16_2 |
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SATA6G |
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A |
ALC |
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22110 |
2280 |
2260 |
2242 |
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2(SOCKET3) |
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887 |
PCIEX1_2 |
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A |
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PCIEX1_3 |
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M.2 |
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COM_DEBUG |
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TB_HEADER |
COM |
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T_SENSOR |
USB_E34 |
USB_E12 |
PANEL |
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RGB_HEADER2 |
ADD_GEN 2 |
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AAFP |
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CLRTC |
CHA_FAN3 |
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CHA_FAN2 |
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Configuration |
1 (Defualt) |
2 |
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PCIEX16_2 |
x4 |
x2 |
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A |
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PCIEX1_2 |
- |
x1 |
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PCIEX1_3 |
- |
x1 |
Configuration |
1 (Default) |
2 |
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B |
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M.2_2 |
x4 |
- |
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SATA6G_56 |
- |
v |
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B
B
•PCIE 3.0 X16_2 runs x2 mode when PCIE X1_2 or PCIEX1_3 is occupied.
•M2_2 shares bandwidth with SATA6G_56. When M.2_2 is populated, SATA6G_56 will be disabled.
x
Product introduction |
1 |
1.1Before 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.
1.2Motherboard overview
Place this side towards the rear of the chassis
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5 |
4 |
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15 |
U32G2_C4 |
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EATX12V |
DIGI+ |
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VRM |
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U32G2_3 |
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LAN_U32G1_56 |
Realtek |
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8111H |
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HDMI |
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_DP |
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U2_56U32G1_78 |
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AUDIO |
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CHAFAN1 |
AIOPUMP |
TPM |
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256Mb |
_ |
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BIOS |
SPI |
6 |
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22110 |
2280 |
2260 |
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PCIEX16_1
1
24.4cm(9.6in)
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SOCKET AM4 |
2242 |
1(SOCKET3) |
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M.2_ |
4 11 2
RGB_HEADER1
CPU_FAN CPU_OPT
A1DIMMDDR4(64bit, 288-pin module) |
A2*DIMMDDR4(64bit, 288-pin module) |
B1DIMMDDR4(64bit, 288-pin module) |
B2*DIMMDDR4(64bit, 288-pin module) |
EATXPWR |
30.5cm(12in) |
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BOOT |
19 |
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CPU |
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VGA |
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DRAM |
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5 |
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12 |
8 |
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U32G1 |
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3 |
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AMD |
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Super |
PCIEX1_1 |
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BATTERY |
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B550 |
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I/O |
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PCIEX16_2 |
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ALC |
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22110 |
2280 |
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2260 |
2242 |
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2(SOCKET3) |
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887 |
PCIEX1_2 |
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PCIEX1_3 |
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M.2 |
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COM_DEBUG |
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TB_HEADER |
COM |
RGB_HEADER2 |
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T_SENSOR |
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USB_E34 USB_E12 |
PANEL |
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ADD_GEN 2 |
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AAFP |
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CLRTC |
CHA_FAN3 |
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CHA_FAN2 |
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14 |
18 |
13 |
11 |
10 |
12 17 |
4 |
9 |
4 |
16 |
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SATA6G_56 SATA6G_34 SATA6G_12
7
6
Unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components.
ASUS PRIME B550-PLUS |
1-1 |
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