Lenovo ThinkBook 14s-IWL

Type 20RM Laptop, from 2019 10 hardware reports
Memory
Up to 16 GB
1 laptop-size slot
SSD and charger
Coming next
Checked from separate sources
Upgradable

Yes. One slot, up to 16 GB seen working.

It takes DDR4-2400 laptop-size sticks (SO-DIMM).

Slots
1 SO-DIMM slot
Type
DDR4-2400 260-pin SO-DIMM
Most seen working
16 GB in two or more machines; one machine runs 32 GB
Firmware says
16 GB maximum
How sure
10 of 10 reports show this layout
See 16 GB DDR4-2400 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 10 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

1 laptop-size slot
Illustration

Questions

Can I upgrade the RAM in the Lenovo ThinkBook 14s-IWL?

Yes. One slot, up to 16 GB seen working. It takes DDR4-2400 laptop-size sticks (SO-DIMM).

What type of RAM does the Lenovo ThinkBook 14s-IWL use?

DDR4-2400 laptop-size sticks (SO-DIMM, 260-pin).

How much RAM can the Lenovo ThinkBook 14s-IWL take?

Machines in the reports run up to 16 GB, and one runs 32 GB. That matches the 16 GB maximum the firmware reports.

Is this my laptop?

Check the label on the bottom. It should say ThinkBook 14s-IWL, and the type code starts with 20RM.

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