GIGA-BYTE TECHNOLOGY B550M AORUS PRO User manual

To reduce the impacts on global warming, the packaging materials of this product
are recyclable and reusable. GIGABYTE works with you to protect the environment.
For more product details, please visit GIGABYTE's website.
B550M AORUS PRO
User's Manual
Rev. 1001
12ME-B55MAPO-1001R

Copyright
©2020 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
The trademarks mentioned in this manual are legally registered to their respective owners.
Disclaimer
Information in this manual is protected by copyright laws and is the property of GIGABYTE.
Changes to the specications and features in this manual may be made by GIGABYTE
without prior notice.
No part of this manual may be reproduced, copied, translated, transmitted, or published in any
form or by any means without GIGABYTE's prior written permission.
In order to assist in the use of this product, carefully read the User's Manual.
For product-related information, check on our website at: https://www.gigabyte.com
Identifying Your Motherboard Revision
The revision number on your motherboard looks like this: "REV: X.X." For example, "REV:
1.0" means the revision of the motherboard is 1.0. Check your motherboard revision before
updating motherboard BIOS, drivers, or when looking for technical information.
Example:

- 3 -
Table of Contents
B550M AORUS PRO Motherboard Layout......................................................................4
B550M AORUS PRO Motherboard Block Diagram.........................................................5
Chapter 1 Hardware Installation .....................................................................................6
1-1 Installation Precautions.................................................................................... 6
1-2 Product Specications...................................................................................... 7
1-3 Installing the CPU .......................................................................................... 10
1-4 Installing the Memory..................................................................................... 10
1-5 Installing an Expansion Card ......................................................................... 11
1-6 Back Panel Connectors.................................................................................. 11
1-7 Internal Connectors........................................................................................ 14
Chapter 2 BIOS Setup ..................................................................................................22
2-1 Startup Screen ............................................................................................... 22
2-2 The Main Menu .............................................................................................. 23
2-3 Favorites (F11) ............................................................................................... 24
2-4 Tweaker.......................................................................................................... 25
2-5 Settings .......................................................................................................... 28
2-6 System Info. ................................................................................................... 33
2-7 Boot................................................................................................................ 34
2-8 Save & Exit..................................................................................................... 37
Chapter 3 Appendix ......................................................................................................38
3-1 Conguring a RAID Set.................................................................................. 38
3-2 Drivers Installation.......................................................................................... 40
Regulatory Notices.................................................................................................... 41
Contact Us ................................................................................................................ 44

- 4 -
B550M AORUS PRO Motherboard Layout
Box Contents
5B550M AORUS PRO motherboard 5Two SATA cables
5Motherboard driver disc
5User's Manual
* The box contents above are for reference only and the actual items shall depend on the product package you obtain.
The box contents are subject to change without notice.
USB20
DP_HDMI
U32G2C
U32_2
U32_1
U32G2_LAN
ATX
AUDIO
DDR4_A1 DDR4_A2 DDR4_B1 DDR4_B2
ATX_12V
AMD B550
CLR_CMOS
M_BIOS
PCIEX4
PCIEX16
SYS_FAN2
CODEC
B550M AORUS PRO
F_PANEL
F_USB1 F_U32
SYS_FAN3 F_USB2
D_LED2
LED_C1
LED_C2
D_LED1
F_AUDIO
SYS_FAN1
LED_CPU
CPU_OPT
iTE®
Super I/O
M2A_CPU
4280110
M2B_SB
4280
SATA3
2 0 3 1
BAT
Realtek®
GbE LAN
Socket AM4
CPU_FAN
60
60
TPM
COM
USB 2.0 Hub
PCIEX1
QFLASH_PLUS
QFLED

- 5 -
B550M AORUS PRO Motherboard Block Diagram
AMD Socket
AM4 CPU
CPU CLK+/- (100~500 MHz)
PCI Express 4.0/3.0 Bus
PCIe 3.0 x4
LAN
RJ45
Realtek®
GbE LAN
4 SATA 6Gb/s
(SATA3 0~3)
PCI Express 3.0 Bus
Center/Subwoofer
Speaker Out
Line Out
MIC
Line In
S/PDIF Out
Rear Speaker Out
CODEC
4 USB 2.0/1.1
2 USB 3.2 Gen 1
4 USB 2.0/1.1
1 USB Type-C™,
with USB 3.2 Gen 2
support
1 USB 3.2 Gen 2
Type A
4 USB 3.2 Gen 1
AMD B550
x1x4 x1
HDMI
1 x PCI Express x4
1 x PCI Express x1
USB 2.0
Hub
1 M.2 Socket 3
(M2A_CPU)
LPC
Bus
TPM
iTE®
Super I/O
SPI
Bus BIOS
x16
1 PCI Express x16
DDR4 3200/2933/2667/2400/2133 MHz
DisplayPort
COM
1 M.2 Socket 3
(M2B_SB)

Chapter 1 Hardware Installation
1-1 Installation Precautions
The motherboard contains numerous delicate electronic circuits and components which can become
damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read the user's
manual and follow these procedures:
•Prior to installation, make sure the chassis is suitable for the motherboard.
•Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or
warranty sticker provided by your dealer. These stickers are required for warranty validation.
•Always remove the AC power by unplugging the power cord from the power outlet before
installing or removing the motherboard or other hardware components.
•When connecting hardware components to the internal connectors on the motherboard, make
sure they are connected tightly and securely.
•When handling the motherboard, avoid touching any metal leads or connectors.
•It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic
components such as a motherboard, CPU or memory. If you do not have an ESD wrist strap,
keep your hands dry and rst touch a metal object to eliminate static electricity.
•Prior to installing the motherboard, please have it on top of an antistatic pad or within an
electrostatic shielding container.
•Before connecting or unplugging the power supply cable from the motherboard, make sure
the power supply has been turned off.
•Before turning on the power, make sure the power supply voltage has been set according to
the local voltage standard.
•Before using the product, please verify that all cables and power connectors of your hardware
components are connected.
•To prevent damage to the motherboard, do not allow screws to come in contact with the
motherboard circuit or its components.
•Make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
•Do not place the computer system on an uneven surface.
•Do not place the computer system in a high-temperature or wet environment.
•Turning on the computer power during the installation process can lead to damage to system
components as well as physical harm to the user.
•If you are uncertain about any installation steps or have a problem related to the use of the
product, please consult a certied computer technician.
•If you use an adapter, extension power cable, or power strip, ensure to consult with its installation
and/or grounding instructions.
- 6 -

1-2 ProductSpecications
CPU AMD Socket AM4, support for:
3rd Generation AMD Ryzen™processors/
New Generation AMD Ryzen™with Radeon™Graphics processors
(Go to GIGABYTE's website for the latest CPU support list.)
Chipset AMD B550
Memory 4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity)
of system memory
Support for DDR4 3200/2933/2667/2400/2133 MHz memory modules
Dual channel memory architecture
Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules
Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
Support for Extreme Memory Prole (XMP) memory modules
(Go to GIGABYTE's website for the latest supported memory speeds and memory
modules.)
Onboard
Graphics
Integrated in the New Generation AMD Ryzen™with Radeon™Graphics
processors:
- 1 x HDMI port, supporting a maximum resolution of 4096x2160@60 Hz
* Support for HDMI 2.1 version, HDCP 2.3, and HDR.
- 1 x DisplayPort, supporting a maximum resolution of 5120x2880@60 Hz
* Support for DisplayPort 1.4 version, HDCP 2.3, and HDR.
Maximum shared memory of 16 GB
Audio Realtek®ALC1200 codec
High Denition Audio
2/4/5.1/7.1-channel
Support for S/PDIF Out
LAN Realtek®GbE LAN chip (1000 Mbit/100 Mbit)
Expansion Slots 1 x PCI Express x16 slot (PCIEX16), integrated in the CPU:
- 3rd Generation AMD Ryzen™processors support PCIe 4.0 x16 mode
- New Generation AMD Ryzen™with Radeon™Graphics processors support
PCIe 3.0 x16 mode
* For optimum performance, if only one PCI Express graphics card is to be installed,
be sure to install it in the PCIEX16 slot.
1 x PCI Express x16 slot (PCIEX4), integrated in the Chipset:
- Supporting PCIe 3.0 x4 mode
1 x PCI Express x1 slot (PCIEX1), integrated in the Chipset:
- Supporting PCIe 3.0 x1 mode
Storage Interface 1 x M.2 connector (M2A_CPU), integrated in the CPU, supporting Socket 3,
M key, type 2242/2260/2280/22110 SSDs:
- 3rd Generation AMD Ryzen™processors support SATA and PCIe 4.0 x4/x2
SSDs
- New Generation AMD Ryzen™with Radeon™Graphics processors support
SATA and PCIe 3.0 x4/x2 SSDs
1 x M.2 connector (M2B_SB), integrated in the Chipset, supporting Socket 3,
M key, type 2242/2260/2280 SSDs:
- Supporting SATA and PCIe 3.0 x4/x2 SSDs
4 x SATA 6Gb/s connectors, integrated in the Chipset:
- Support for RAID 0, RAID 1, and RAID 10
- 7 -

USB CPU:
- 4 x USB 3.2 Gen 1 ports on the back panel
Chipset:
- 1 x USB Type-C™port on the back panel, with USB 3.2 Gen 2 support
- 1 x USB 3.2 Gen 2 Type-A port (red) on the back panel
- 2 x USB 3.2 Gen 1 ports available through the internal USB header
- 4 x USB 2.0/1.1 ports available through the internal USB headers
Chipset+1 USB 2.0 Hub:
- 4 x USB 2.0/1.1 ports on the back panel
Internal
Connectors
1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector
1 x CPU fan header
1 x water cooling CPU fan header
3 x system fan headers
2 x addressable LED strip headers
2 x RGB LED strip headers
1 x CPU cooler LED strip/RGB LED strip header
2 x M.2 Socket 3 connectors
4 x SATA 6Gb/s connectors
1 x front panel header
1 x front panel audio header
1 x USB 3.2 Gen 1 header
2 x USB 2.0/1.1 headers
1 x serial port header
1 x Trusted Platform Module (TPM) header (2x6 pin, for the GC-TPM2.0_S
module only)
1 x Clear CMOS jumper
Back Panel
Connectors
4 x USB 2.0/1.1 ports
1 x DisplayPort
1 x HDMI port
4 x USB 3.2 Gen 1 ports
1 x USB 3.2 Gen 2 Type-A port (red)
1 x USB Type-C™port, with USB 3.2 Gen 2 support
1 x Q-Flash Plus button
1 x RJ-45 port
1 x optical S/PDIF Out connector
5 x audio jacks
I/O Controller iTE®I/O Controller Chip
- 8 -

Hardware
Monitor
Voltage detection
Temperature detection
Fan speed detection
Water cooling ow rate detection
Overheating warning
Fan fail warning
Fan speed control
* Whether the fan speed control function is supported will depend on the cooler you
install.
BIOS 1 x 256 Mbit ash
Use of licensed AMI UEFI BIOS
PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0
Unique Features Support for APP Center
* Available applications in APP Center may vary by motherboard model. Supported
functions of each application may also vary depending on motherboard specications.
- @BIOS
- EasyTune
- Fast Boot
- Game Boost
- ON/OFF Charge
- RGB Fusion
- Smart Backup
- System Information Viewer
Support for Q-Flash Plus
Support for Q-Flash
Support for Xpress Install
Bundled
Software
Norton®Internet Security (OEM version)
Realtek®8118 Gaming LAN Bandwidth Control Utility
Operating
System Support for Windows 10 64-bit
Form Factor Micro ATX Form Factor; 24.4cm x 24.4cm
* GIGABYTE reserves the right to make any changes to the product specications and product-related information without
prior notice.
Please visit GIGABYTE's website
for support lists of CPU, memory
modules, SSDs, and M.2 devices.
Please visit the Support\Utility List
page on GIGABYTE's website to
download the latest version of apps.
- 9 -

Please visit GIGABYTE's website for details on hardware installation.
DualChannelMemoryConguration
This motherboard provides four memory sockets and supports Dual Channel Technology. After the memory
is installed, the BIOS will automatically detect the specications and capacity of the memory. Enabling Dual
Channel memory mode will double the original memory bandwidth.
The four memory sockets are divided into two channels and each channel has two memory sockets as following:
Channel A: DDR4_A1, DDR4_A2
Channel B: DDR4_B1, DDR4_B2
1-3 Installing the CPU
Read the following guidelines before you begin to install the CPU:
•Make sure that the motherboard supports the CPU.
(Go to GIGABYTE's website for the latest CPU support list.)
•Always turn off the computer and unplug the power cord from the power outlet before installing the
CPU to prevent hardware damage.
•Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly.
•Apply an even and thin layer of thermal grease on the surface of the CPU.
•Do not turn on the computer if the CPU cooler is not installed, otherwise overheating and damage
of the CPU may occur.
•Set the CPU host frequency in accordance with the CPU specications. It is not recommended
that the system bus frequency be set beyond hardware specications since it does not meet the
standard requirements for the peripherals. If you wish to set the frequency beyond the standard
specications, please do so according to your hardware specications including the CPU, graphics
card, memory, hard drive, etc.
Installing the CPU
Locate the pin one (denoted by a small triangle) of the CPU socket and the CPU.
AM4 Socket
A Small Triangle
Marking Denotes Pin
One of the Socket AM4 CPU
A Small Triangle
Marking Denotes CPU
Pin One
1-4 Installing the Memory
Read the following guidelines before you begin to install the memory:
•Make sure that the motherboard supports the memory. It is recommended that memory of the same
capacity, brand, speed, and chips be used.
(Go to GIGABYTE's website for the latest supported memory speeds and memory modules.)
•Always turn off the computer and unplug the power cord from the power outlet before installing the
memory to prevent hardware damage.
•Memory modules have a foolproof design. A memory module can be installed in only one direction.
If you are unable to insert the memory, switch the direction.
- 10 -