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ASRock B550 Pro4 AMD B550 DDR4 ATX Motherboard
MotherboardsASRock

ASRock B550 Pro4 AMD B550 DDR4 ATX Motherboard

MPN: 90-MXBCZ0-A0UAYZ

Key specifications

SocketAM4
Form factorATX
ChipsetAMD B550
Memory typeDDR4
M.2 slots4
Max Memory128 GB
Best indexed price
£94.98GBP
Indexed 16 Mar 2026 — verify at retailer. How we get prices

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eBay UK£94.98
Indexed 16 Mar 2026New · seller lee_tokyo
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Full Specifications31 fields

Additional Information

Model Number
90-MXBCZ0-A0UAYZ
Gtin
4710483931482

Additional Specifications

Water Cooled
No
Cooling
Passive Heatsinks
Qpi Speed
N/A
Dimensions
305 x 244 mm
Note
-

Core Specifications

Edition
B500 Pro4
Form Factor
ATX
Socket
AM4
Chipset
AMD B550

External Connectivity

Network Interface Type
Wired Gigabit LAN (10/100/1000)
Network Chip Modules
1 x Realtek RTL8111H (Gigabit LAN)
Rear I O Connectors
2 x Antenna Ports 1 x D-Sub (VGA) 1 x Front Speaker Out 1 x HDMI 1 x Line In 1 x Mic-In 1 x PS/2 Keyboard/Mouse Combo 1 x RJ-45 with LED 4 x USB 3.2 Gen1 Type-A 1 x USB 3.2 Gen2 Type-A 1 x USB 3.2 Gen2 Type-C

Graphics Support

Primary Gpu Interface
PCIe 4.0 (x16)
Nvidia Sli Support
Not Supported
Amd Crossfire Support
2-Way CrossFire
Integrated Graphics
Requires Processor Graphics or Discrete GPU
On Board Graphics Connectors
D-Sub (VGA) HDMI 2.1

Internal Connectivity

Expansion Slots
2 x M.2 Key E (Supports Wi-Fi modules) 1 x M.2, 22-42/60/80, PCIe Gen3/SATA3 1 x M.2, 22-60/80/ 110 PCIe Gen 4x4 1 x M.2, 22-60/80/110, PCIe/SATA 2 x PCIe 3.0 x1 2 x PCIe 4.0 x16
Sata Support
SATA3
Raid Support Via
-
Storage Mode Support
RAID 0 RAID 1 RAID 10
Internal I O
1 x 24-pin (Power) 1 x 4-pin (Power) 4 x 4-pin CHA_FAN connector 1 x 4-pin CPU Fan Connector 1 x 4-pin CPU OPT Fan Connector 1 x 8-pin (Power) 2 x Addressable Digital RGB Header 1 x Front Panel Audio Header 2 x RGB Header 6 x SATA III - 6Gb/s 1 x Serial (COM) Header 1 x TPM (SPI_TPM) header 2 x USB 2.0 Header 1 x USB 3.2 Gen1 Header

RAM Memory Support

Memory Type
DDR4
Memory Channel
Dual (2)
Memory Type Ecc
ECC/Non-ECC
Memory Type R U
UDIMM (Unbuffered)
Memory Speed Mhz
DDR4 - 2133 DDR4 - 2400 DDR4 - 2667 DDR4 - 2933 DDR4 - 3200 DDR4 - 3466(OC) DDR4 - 3600(OC) DDR4 - 3733(OC) DDR4 - 3800(OC) DDR4 - 3866(OC) DDR4 - 4000(OC) DDR4 - 4133(OC) DDR4 - 4200(OC) DDR4 - 4266(OC) DDR4 - 4333(OC) DDR4 - 4400(OC) DDR4 - 4466(OC) DDR4 - 4533(OC) DDR4 - 4533+(OC) DDR4 - 4600(OC) DDR4 - 4666(OC) DDR4 - 4733+(OC)
Max Memory Capacity
128GB

General

Audio
Realtek ALC1200 7.1 HD Audio