Lenovo ThinkCentre M75s Gen 2
Type 11JA Desktop, from 2021 2 hardware reports
Memory
Up to 16 GB
4 full-size slots
SSD
1+ M.2
At least 1 M.2 SSD slot
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. 4 slots, up to 16 GB seen working.
It takes DDR4-2666 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR4-2666 288-pin DIMM
- Most seen working
- 16 GB; one machine runs 16 GB
- Firmware says
- 128 GB maximum
- SSD slots
- At least 1 M.2 SSD slot listed by the firmware
- How sure
- 2 of 2 reports show this layout
See 4 GB DDR4-2666 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 2 hardware reports of this desktop. Sources and method. Updated 9 Nov 2026.
4 full-size slots
Illustration Questions
Can I upgrade the RAM in the Lenovo ThinkCentre M75s Gen 2?
Yes. 4 slots, up to 16 GB seen working. It takes DDR4-2666 full-size sticks (DIMM).
What type of RAM does the Lenovo ThinkCentre M75s Gen 2 use?
DDR4-2666 full-size sticks (DIMM, 288-pin).
Does the Lenovo ThinkCentre M75s Gen 2 have an M.2 SSD slot?
Yes. The firmware lists at least 1 M.2 SSD slot, in 2 reports. Some firmware leaves a slot out, so there may be more.
Is this my desktop?
Check the label on the bottom. It should say ThinkCentre M75s Gen 2, and the type code starts with 11JA. Other type codes share this name: 11R9.