MSI MEG B550 UNIFY-X Quick Start

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UEFI BIOS
UEFI BIOS

architecture. UEFI has many new functions and advantages that traditional BIOS



compatible with older devices. That allows you to replace legacy devices with UEFI
compatible devices during the transition.

Important
The term BIOS in this user guide refers to UEFI BIOS unless otherwise noted.
UEFI advantages
 Fast booting - UEFI can directly boot the operating system and save the BIOS self-

 Supports for hard drive partitions larger than 2 TB.
 
 Supports unlimited number of partitions.
 Supports full capabilities of new devices - new devices may not provide backward
compatibility.
 Supports secure startup - UEFI can check the validity of the operating system to
ensure that no malware tampers with the startup process.
Incompatible UEFI cases
 32-bit Windows operating system - this motherboard supports only Windows 10
64-bit operating system.
 Older graphics card - the system will detect your graphics card. When display a
warning message There is no GOP (Graphics Output protocol) support detected in
this graphics card.

Important
We recommend that you to use a GOP/ UEFI compatible graphics card.
How to check the BIOS mode?

CPU Temperature:
Motherboard Temperature:
VCore:
DDR Voltage:
BIOS Mode: CSM/UEFI
CPU Temperature:
Motherboard Temperature:
VCore:
DDR Voltage:
BIOS Mode: CSM/UEFI
UEFI boot mode CSM boot mode

MSI MEG B550 UNIFY-X Specifications

General

Processor socket	Socket AM4
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 3, AMD Ryzen 5, AMD Ryzen 7, AMD Ryzen 9 3rd Gen
Non-ECC	Yes
Memory channels	Dual-channel
Memory slots type	DIMM
Number of memory slots	2
Supported memory types	DDR4-SDRAM
Maximum internal memory	64 GB
Supported memory clock speeds	5800, 5300, 1866, 2133, 2400, 2667, 2800, 2933, 3000, 3066, 3200, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4400, 4600, 4733, 4800, 4866, 5000, 5100 MHz
RAID levels	0, 1, 10
Number of storage drives supported	10
Supported storage drive interfaces	M.2, SATA III
DirectX version	12.0
Maximum resolution	4096 x 2160 pixels
Maximum graphics card memory	16384 MB
Parallel processing technology support	2-Way CrossFireX
Number of SATA II connectors	0
Number of SATA III connectors	6
USB 3.2 Gen 2 (3.1 Gen 2) connectors	1
Headphone outputs	5
USB connector type	USB Type-A, USB Type-C
USB 2.0 ports quantity	4
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	3
LAN controller	Realtek RTL8125B
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
Bluetooth version	5.1
Top Wi-Fi standard	Wi-Fi 6 (802.11ax)
WLAN controller model	Intel Wi-Fi 6 AX200
Ethernet interface type	2.5 Gigabit Ethernet
Audio chip	Realtek ALC1220P
Component for	PC
Motherboard chipset	AMD B550
PC health monitoring	FAN, Temperature
Audio output channels	7.1 channels
Motherboard form factor	ATX
Windows operating systems supported	Windows 10 x64
BIOS type	UEFI AMI
ACPI version	6.1
BIOS memory size	256 Mbit
System Management BIOS (SMBIOS) version	2.8
Cables included	SATA
Harmonized System (HS) code	84733020
Weight	1000 g

Weight and Dimensions

Depth	244 mm
Width	304 mm
Height	65 mm