Lenovo IdeaPad S145-14IWL

Type 81MU Laptop, from 2019 8 hardware reports
Memory
Up to 4 GB
1 laptop-size slot
SSD and charger
Coming next
Checked from separate sources
Upgradable

Yes. One slot, up to 4 GB seen working.

It takes DDR4-2133 laptop-size sticks (SO-DIMM).

Slots
1 SO-DIMM slot
Type
DDR4-2133 260-pin SO-DIMM
Most seen working
4 GB in two or more machines; one machine runs 8 GB
Firmware says
8 GB maximum (often wrong, so we show what machines run)
How sure
7 of 8 reports show this layout
See 4 GB DDR4-2133 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 8 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 IdeaPad S145-14IWL?

Yes. One slot, up to 4 GB seen working. It takes DDR4-2133 laptop-size sticks (SO-DIMM).

What type of RAM does the Lenovo IdeaPad S145-14IWL use?

DDR4-2133 laptop-size sticks (SO-DIMM, 260-pin).

How much RAM can the Lenovo IdeaPad S145-14IWL take?

Machines in the reports run up to 4 GB, and one runs 8 GB. The firmware reports a maximum of 8 GB, a figure that is often wrong.

Is this my laptop?

Check the label on the bottom. It should say IdeaPad S145-14IWL, and the type code starts with 81MU.

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