MSI MEG B550 UNIFY User Manual

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Onboard LEDs
D7 No Console Input Devices are found
D8 Invalid password
D9 Error loading Boot Option (LoadImage returned error)
DA Boot Option is failed (StartImage returned error)
DB Flash update is failed
DC Reset protocol is not available
S3 Resume Progress Codes
E0 S3 Resume is stared (S3 Resume PPI is called by the DXE IPL)
E1 S3 Boot Script execution
E2 Video repost
E3 OS S3 wake vector call
E4 - E7 Reserved for future AMI progress codes
S3 Resume Error Codes
E8 S3 Resume Failed
E9 S3 Resume PPI not Found
EA S3 Resume Boot Script Error
EB S3 OS Wake Error
EC - EF Reserved for future AMI error codes
Recovery Progress Codes
F0 Recovery condition triggered by firmware (Auto recovery)
F1 Recovery condition triggered by user (Forced recovery)
F2 Recovery process started
F3 Recovery firmware image is found
F4 Recovery firmware image is loaded
F5 - F7 Reserved for future AMI progress codes
Recovery Error Codes
F8 Recovery PPI is not available
F9 Recovery capsule is not found
FA Invalid recovery capsule
FB - FF Reserved for future AMI error codes

MSI MEG B550 UNIFY 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
Maximum number of SMP processors	1
ECC	Yes
Memory channels	Dual-channel
Memory slots type	DIMM
Number of memory slots	4
Supported memory types	DDR4-SDRAM
Maximum internal memory	128 GB
Supported memory clock speeds	1866, 2133, 2400, 2667, 2800, 2933, 3000, 3066, 3200, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4400, 4533, 4600, 4733, 4866, 5000, 5100, 5600 MHz
RAID levels	0, 1, 10
Supported storage drive types	HDD & SSD
Number of storage drives supported	10
Supported storage drive interfaces	M.2, SATA
DirectX version	12.0
Maximum resolution	4096 x 2160 pixels
Maximum graphics card memory	16384 MB
Parallel processing technology support	2-Way CrossFireX
USB 2.0 connectors	2
Number of SATA II connectors	0
Number of SATA III connectors	6
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
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 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
BIOS type	UEFI AMI
Cables included	SATA
Harmonized System (HS) code	84733020
Weight	1000 g

Weight and Dimensions

Depth	244 mm
Width	304 mm
Height	65 mm