MSI PS42 8M

Laptop, from 2018 3 hardware reports
Memory
Up to 8 GB
1+ laptop-size slot
SSD and charger
Coming next
Checked from separate sources
Upgradable

Yes. At least 1 slots, up to 8 GB seen working.

It takes DDR4-2400 laptop-size sticks (SO-DIMM).

Slots
At least 1 SO-DIMM slot
Firmware lists
4 sockets, but no machine in the reports had more than 1 filled. Many laptops list sockets that aren't there, and some workstations hide two slots under the keyboard.
Type
DDR4-2400 260-pin SO-DIMM
Most seen working
8 GB in two or more machines; one machine runs 16 GB
Firmware says
64 GB maximum (often wrong, so we show what machines run)
How sure
3 of 3 reports show this layout
See 8 GB DDR4-2400 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 3 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

1+ laptop-size slot
Illustration

Questions

Can I upgrade the RAM in the MSI PS42 8M?

Yes. At least 1 slots, up to 8 GB seen working. It takes DDR4-2400 laptop-size sticks (SO-DIMM).

What type of RAM does the MSI PS42 8M use?

DDR4-2400 laptop-size sticks (SO-DIMM, 260-pin).

How much RAM can the MSI PS42 8M take?

Machines in the reports run up to 8 GB, and one runs 16 GB. The firmware reports a maximum of 64 GB, a figure that is often wrong.

Is this my laptop?

Check the model name on the label underneath. It should read PS42 8M.