HP 255 15.6 inch G9 Notebook PC
Yes. 2 slots, up to 32 GB seen working.
It takes DDR4-3200 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-3200 260-pin SO-DIMM
- Most seen working
- 32 GB in two or more machines
- Firmware says
- 64 GB maximum (often wrong, so we show what machines run)
- SSD slots
- At least 2 M.2 SSD slots listed by the firmware
- How sure
- 26 of 26 reports show this layout
Worked out from 26 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 41 Wh.
That is the design capacity the batteries themselves report, and the label can read 1 to 3 Wh higher. Other pack sizes may have shipped, so check the capacity printed on yours before you order.
From 26 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the HP 255 15.6 inch G9 Notebook PC?
Yes. 2 slots, up to 32 GB seen working. It takes DDR4-3200 laptop-size sticks (SO-DIMM).
What type of RAM does the HP 255 15.6 inch G9 Notebook PC use?
DDR4-3200 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the HP 255 15.6 inch G9 Notebook PC take?
Machines in the reports run up to 32 GB. The firmware reports a maximum of 64 GB, a figure that is often wrong.
Does the HP 255 15.6 inch G9 Notebook PC have an M.2 SSD slot?
Yes. The firmware lists at least 2 M.2 SSD slots, in 25 reports. Some firmware leaves a slot out, so there may be more.
What battery does the HP 255 15.6 inch G9 Notebook PC use?
Batteries in these laptops report 41 Wh, going by 26 reports. Other pack sizes may have shipped, so check the capacity printed on yours.
Is this my laptop?
Check the model name on the label underneath. It should read 255 15.6 inch G9 Notebook PC.