Lenovo ThinkBook 15-IIL

Type 20SM Laptop, from 2019 33 hardware reports
Memory
Up to 32 GB
2 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable

Yes. 2 slots, up to 32 GB seen working.

It takes DDR4-2666 laptop-size sticks (SO-DIMM).

Slots
2 SO-DIMM slots
Type
DDR4-2666 260-pin SO-DIMM
Most seen working
32 GB in two or more machines
Firmware says
32 GB maximum
How sure
33 of 33 reports show this layout
See 16 GB DDR4-2666 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 33 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 ThinkBook 15-IIL?

Yes. 2 slots, up to 32 GB seen working. It takes DDR4-2666 laptop-size sticks (SO-DIMM).

What type of RAM does the Lenovo ThinkBook 15-IIL use?

DDR4-2666 laptop-size sticks (SO-DIMM, 260-pin).

How much RAM can the Lenovo ThinkBook 15-IIL take?

Machines in the reports run up to 32 GB. That matches the 32 GB maximum the firmware reports.

Is this my laptop?

Check the label on the bottom. It should say ThinkBook 15-IIL, and the type code starts with 20SM.

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