Lenovo ThinkPad P51s W10DG
Type 20JY Laptop, from 2021 3 hardware reports
Memory
Up to 24 GB
2 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 24 GB seen working.
It takes DDR4-2133 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-2133 260-pin SO-DIMM
- Most seen working
- 24 GB; one machine runs 24 GB
- Firmware says
- 32 GB maximum
- How sure
- 3 of 3 reports show this layout
See 8 GB DDR4-2133 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 3 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
2 laptop-size slots
Illustration Questions
Can I upgrade the RAM in the Lenovo ThinkPad P51s W10DG?
Yes. 2 slots, up to 24 GB seen working. It takes DDR4-2133 laptop-size sticks (SO-DIMM).
What type of RAM does the Lenovo ThinkPad P51s W10DG use?
DDR4-2133 laptop-size sticks (SO-DIMM, 260-pin).
Is this my laptop?
Check the label on the bottom. It should say ThinkPad P51s W10DG, and the type code starts with 20JY.