MSI MS-B0A91

Motherboard, from 2023 2 hardware reports
Memory
Up to 16 GB
1 laptop-size slot
SSD slots
Coming next
Checked from separate sources

Only 2 machines reported so far, so this answer rests on few examples. Check the label or open the panel before you buy.

Upgradable

Yes. One slot, up to 16 GB seen working.

It takes DDR4-3200 laptop-size sticks (SO-DIMM).

Slots
1 SO-DIMM slot
Type
DDR4-3200 260-pin SO-DIMM
Most seen working
16 GB; one machine runs 16 GB
Firmware says
32 GB maximum
How sure
2 of 2 reports show this layout
See 16 GB DDR4-3200 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 2 hardware reports of this motherboard. Sources and method. Updated 9 Nov 2026.

1 laptop-size slot
Illustration

Questions

Can I upgrade the RAM in the MSI MS-B0A91?

Yes. One slot, up to 16 GB seen working. It takes DDR4-3200 laptop-size sticks (SO-DIMM).

What type of RAM does the MSI MS-B0A91 use?

DDR4-3200 laptop-size sticks (SO-DIMM, 260-pin).

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-B0A91.