MSI MS-B0A21
Motherboard, from 2021 6 hardware reports
Memory
Up to 32 GB
2 laptop-size slots
SSD
1+ M.2
At least 1 M.2 SSD slot
SSD length
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 32 GB seen working.
It takes DDR4-3200 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-3200 260-pin SO-DIMM
- Most seen working
- 32 GB in two or more machines; one machine runs 64 GB
- Firmware says
- 128 GB maximum (often wrong, so we show what machines run)
- SSD slots
- At least 1 M.2 SSD slot listed by the firmware
- How sure
- 6 of 6 reports show this layout
See 16 GB DDR4-3200 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 6 hardware reports of this motherboard. Sources and method. Updated 9 Nov 2026.
2 laptop-size slots
Illustration Questions
Can I upgrade the RAM in the MSI MS-B0A21?
Yes. 2 slots, up to 32 GB seen working. It takes DDR4-3200 laptop-size sticks (SO-DIMM).
What type of RAM does the MSI MS-B0A21 use?
DDR4-3200 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the MSI MS-B0A21 take?
Machines in the reports run up to 32 GB, and one runs 64 GB. The firmware reports a maximum of 128 GB, a figure that is often wrong.
Does the MSI MS-B0A21 have an M.2 SSD slot?
Yes. The firmware lists at least 1 M.2 SSD slot, in 6 reports. Some firmware leaves a slot out, so there may be more.
Is this my motherboard?
The model name is printed on the board, usually between the memory slots or near the CPU socket. In Windows, open System Information and look at "BaseBoard Product"; it should read MS-B0A21.