motherboardASRock
ASRock B550M Steel Legend Micro ATX AM4 Motherboard
B550M Steel Legend 90-MXBCU0-A0UAYZ
Key specs at a glance
Socket
AM4
Form Factor
Micro ATX
Memory Type
DDR4
Max Memory Speed
4533 MHz
Technical specifications
Every labeled spec with an info icon has a plain-English definition.
Memory
RAM Type
DDR4
Memory Slots
4
Max Memory
128 GB
Max Memory Speed
4533 MHz
Physical
Form Factor
Micro ATX
Connectivity
CPU Socket
AM4
Chipset
AMD B550
SATA Ports
6
M.2 Slots
3
WiFi
No
RAID Support
Yes
ECC Support
No
PCIe Slots
3
Build
Manufacturer
ASRock
Part Number
B550M Steel Legend
90-MXBCU0-A0UAYZ
Other
Price
109.99
Price Updated At
2026-08-23T12:09:43.761+00:00
Catalog record
This page lists the available catalog data for ASRock B550M Steel Legend Micro ATX AM4 Motherboard. Use the builder action to check the part against a saved build, or compare it with other motherboard options before deciding.