Shuttle SH55J

Desktop, from 2011 2 hardware reports
Memory
Up to 16 GB
4 full-size slots
Drives and power
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. 4 slots, up to 16 GB seen working.

It takes the same type of full-size sticks (DIMM).

Slots
4 DIMM slots
Most seen working
16 GB in two or more machines
Firmware says
4 GB maximum (often wrong, so we show what machines run)
How sure
2 of 2 reports show this layout

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

4 full-size slots
Illustration

Questions

Can I upgrade the RAM in the Shuttle SH55J?

Yes. 4 slots, up to 16 GB seen working. It takes the same type of full-size sticks (DIMM).

How much RAM can the Shuttle SH55J take?

Machines in the reports run up to 16 GB. The firmware reports a maximum of 4 GB, a figure that is often wrong.

Is this my desktop?

Check the model name on the front or the label of the case. It should read SH55J.