Lenovo ThinkPad L580

Type 20LX Laptop, from 2018 2 hardware reports
Memory
Up to 24 GB
2 laptop-size slots
SSD and charger
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 24 GB seen working.

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

Slots
2 SO-DIMM slots
Type
DDR4-2400 260-pin SO-DIMM
Most seen working
24 GB; one machine runs 24 GB
Firmware says
32 GB maximum
How sure
2 of 2 reports show this layout
See 8 GB DDR4-2400 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 2 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 ThinkPad L580?

Yes. 2 slots, up to 24 GB seen working. It takes DDR4-2400 laptop-size sticks (SO-DIMM).

What type of RAM does the Lenovo ThinkPad L580 use?

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

Is this my laptop?

Check the label on the bottom. It should say ThinkPad L580, and the type code starts with 20LX. Other type codes share this name: 20LW.