HP ProBook 4340s
Yes. 2 slots, up to 8 GB seen working.
It takes DDR3-1600 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR3-1600 204-pin SO-DIMM
- Most seen working
- 8 GB in two or more machines; one machine runs 12 GB
- Firmware says
- 16 GB maximum (often wrong, so we show what machines run)
- How sure
- 11 of 11 reports show this layout
Worked out from 11 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 51 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 11 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the HP ProBook 4340s?
Yes. 2 slots, up to 8 GB seen working. It takes DDR3-1600 laptop-size sticks (SO-DIMM).
What type of RAM does the HP ProBook 4340s use?
DDR3-1600 laptop-size sticks (SO-DIMM, 204-pin).
How much RAM can the HP ProBook 4340s take?
Machines in the reports run up to 8 GB, and one runs 12 GB. The firmware reports a maximum of 16 GB, a figure that is often wrong.
What battery does the HP ProBook 4340s use?
Batteries in these laptops report 51 Wh, going by 11 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 ProBook 4340s.