Lenovo IdeaCentre 300S-11ISH

Type 90D9 Desktop, from 2015 2 hardware reports
Memory
Up to 16 GB
2 full-size slots
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. 2 slots, up to 16 GB seen working.

It takes DDR4-2133 full-size sticks (DIMM).

Slots
2 DIMM slots
Type
DDR4-2133 288-pin DIMM
Most seen working
16 GB; one machine runs 16 GB
Firmware says
32 GB maximum
How sure
2 of 2 reports show this layout
See 8 GB DDR4-2133 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.

2 full-size slots
Illustration

Questions

Can I upgrade the RAM in the Lenovo IdeaCentre 300S-11ISH?

Yes. 2 slots, up to 16 GB seen working. It takes DDR4-2133 full-size sticks (DIMM).

What type of RAM does the Lenovo IdeaCentre 300S-11ISH use?

DDR4-2133 full-size sticks (DIMM, 288-pin).

Is this my desktop?

Check the label on the bottom. It should say IdeaCentre 300S-11ISH, and the type code starts with 90D9.

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