MSI MAG B550M MORTAR MAX WIFI

Board code MS-7C94 Motherboard, from 2022 6 hardware reports
Memory
Up to 32 GB
4 full-size slots
SSD
1+ M.2
At least 1 M.2 SSD slot
SSD length
Coming next
Checked from separate sources
Upgradable

Yes. 4 slots, up to 32 GB seen working.

It takes DDR4-2400 full-size sticks (DIMM).

Slots
4 DIMM slots
Type
DDR4-2400 288-pin DIMM
Most seen working
32 GB in two or more machines; one machine runs 128 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 8 GB DDR4-2400 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.

4 full-size slots
Illustration

Questions

Can I upgrade the RAM in the MSI MAG B550M MORTAR MAX WIFI?

Yes. 4 slots, up to 32 GB seen working. It takes DDR4-2400 full-size sticks (DIMM).

What type of RAM does the MSI MAG B550M MORTAR MAX WIFI use?

DDR4-2400 full-size sticks (DIMM, 288-pin).

How much RAM can the MSI MAG B550M MORTAR MAX WIFI take?

Machines in the reports run up to 32 GB, and one runs 128 GB. The firmware reports a maximum of 128 GB, a figure that is often wrong.

Does the MSI MAG B550M MORTAR MAX WIFI 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 MAG B550M MORTAR MAX WIFI or MS-7C94.

More MSI B550 boards