HP ProDesk 400 G6 Desktop Mini PC
Mini PC, from 2021 7 hardware reports
Memory
Up to 32 GB
2 laptop-size slots
SSD
1+ M.2
At least 1 M.2 SSD slot
Drives and power
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 32 GB seen working.
It takes DDR4-2666 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-2666 260-pin SO-DIMM
- Most seen working
- 32 GB in two or more machines
- Firmware says
- 32 GB maximum
- SSD slots
- At least 1 M.2 SSD slot listed by the firmware
- How sure
- 7 of 7 reports show this layout
See 16 GB DDR4-2666 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.
2 laptop-size slots
Illustration Questions
Can I upgrade the RAM in the HP ProDesk 400 G6 Desktop Mini PC?
Yes. 2 slots, up to 32 GB seen working. It takes DDR4-2666 laptop-size sticks (SO-DIMM).
What type of RAM does the HP ProDesk 400 G6 Desktop Mini PC use?
DDR4-2666 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the HP ProDesk 400 G6 Desktop Mini PC take?
Machines in the reports run up to 32 GB. That matches the 32 GB maximum the firmware reports.
Does the HP ProDesk 400 G6 Desktop Mini PC have an M.2 SSD slot?
Yes. The firmware lists at least 1 M.2 SSD slot, in 7 reports. Some firmware leaves a slot out, so there may be more.
Is this my desktop?
Check the model name on the front or the label of the case. It should read ProDesk 400 G6 Desktop Mini PC.