MSI MEG B550 UNIFY-X Quick Start

20
Overview of Components
PCIe bandwidth configuration table for PCIe & M.2 slots
Chipset
modeCPU mode

details.
Slot Chipset Mode CPU Mode
 @ 4.0/ 3.0 x16* @ 4.0/ 3.0 x8*
 — 3.0 x1 3.0 x1
 — 3.0 x1 3.0 x1
 — @ 3.0 x4 — @ 3.0 x4
M2_1 4.0/ 3.0 x4* 4.0/ 3.0 x4*
M2_2 3.0 x2 Empty 4.0/ 3.0 x4*
M2_3 3.0 x2** 4.0/ 3.0 x4*
/
**
M2_4 3.0 x4 Empty 3.0 x4 Empty


** The SATA5 and SATA6 ports will be unavailable when installing M.2 PCIe SSD into
M2_3. The SATA5 port will be unavailable when installing M.2 SATA SSD into M2_3.

Important
 Enabling CPU modeBIOS > SETTINGS > Advanced > PCI sub-system
Settings > M2_2 / M2_3 Lanes Source and set it to CPU. In CPU mode

 In CPU mode with AMD Ryzen
TM
5000 & 3000 
AMD Ryzen
TM
5 3400G & Ryzen
TM


 In CPU mode with AMD Ryzen
TM
4000-G

available.

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