HP EliteOne 870 27 inch G9 All-in-One Desktop PC
All-in-one, from 2022 2 hardware reports
Memory
Up to 16 GB
2 laptop-size slots
SSD
3+ M.2
At least 3 M.2 SSD 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. 2 slots, up to 16 GB seen working.
It takes the same type of laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Most seen working
- 16 GB in two or more machines
- Firmware says
- 64 GB maximum (often wrong, so we show what machines run)
- SSD slots
- At least 3 M.2 SSD slots listed by the firmware
- 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.
2 laptop-size slots
Illustration Questions
Can I upgrade the RAM in the HP EliteOne 870 27 inch G9 All-in-One Desktop PC?
Yes. 2 slots, up to 16 GB seen working. It takes the same type of laptop-size sticks (SO-DIMM).
How much RAM can the HP EliteOne 870 27 inch G9 All-in-One Desktop PC take?
Machines in the reports run up to 16 GB. The firmware reports a maximum of 64 GB, a figure that is often wrong.
Does the HP EliteOne 870 27 inch G9 All-in-One Desktop PC have an M.2 SSD slot?
Yes. The firmware lists at least 3 M.2 SSD slots, in 2 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 EliteOne 870 27 inch G9 All-in-One Desktop PC.