Lenovo IdeaPad S100 20109

Laptop, from 2011 6 hardware reports
Memory
Up to 2 GB
2 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable

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

It takes the same type of laptop-size sticks (SO-DIMM).

Slots
2 SO-DIMM slots
Most seen working
2 GB in two or more machines
Firmware says
4 GB maximum (often wrong, so we show what machines run)
How sure
6 of 6 reports show this layout

Worked out from 6 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 IdeaPad S100 20109?

Yes. 2 slots, up to 2 GB seen working. It takes the same type of laptop-size sticks (SO-DIMM).

How much RAM can the Lenovo IdeaPad S100 20109 take?

Machines in the reports run up to 2 GB. The firmware reports a maximum of 4 GB, a figure that is often wrong.

Is this my laptop?

Check the model name on the label underneath. It should read IdeaPad S100 20109.

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