PC Engines apu4

Desktop, from 2019 7 hardware reports
Memory
Up to 4 GB
1 laptop-size slot
Drives and power
Coming next
Checked from separate sources
Upgradable

Yes. One slot, up to 4 GB seen working.

It takes DDR3-1333 laptop-size sticks (SO-DIMM).

Slots
1 SO-DIMM slot
Type
DDR3-1333 204-pin SO-DIMM
Most seen working
4 GB in two or more machines
Firmware says
4 GB maximum
How sure
5 of 7 reports show this layout
See 4 GB DDR3-1333 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 7 hardware reports of this desktop. Sources and method. Updated 9 Nov 2026.

1 laptop-size slot
Illustration

Questions

Can I upgrade the RAM in the PC Engines apu4?

Yes. One slot, up to 4 GB seen working. It takes DDR3-1333 laptop-size sticks (SO-DIMM).

What type of RAM does the PC Engines apu4 use?

DDR3-1333 laptop-size sticks (SO-DIMM, 204-pin).

How much RAM can the PC Engines apu4 take?

Machines in the reports run up to 4 GB. That matches the 4 GB maximum the firmware reports.

Is this my desktop?

Check the model name on the front or the label of the case. It should read apu4.

More in the PC Engines APU