Lenovo ThinkPad T580
Type 20LA Laptop, from 2018 21 hardware reports
Memory

Up to 32 GB
2 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 32 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
- 32 GB in two or more machines
- Firmware says
- 32 GB maximum
- How sure
- 21 of 21 reports show this layout
See 16 GB DDR4-2400 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 21 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 T580?
Yes. 2 slots, up to 32 GB seen working. It takes DDR4-2400 laptop-size sticks (SO-DIMM).
What type of RAM does the Lenovo ThinkPad T580 use?
DDR4-2400 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the Lenovo ThinkPad T580 take?
Machines in the reports run up to 32 GB. That matches the 32 GB maximum the firmware reports.
Is this my laptop?
Check the label on the bottom. It should say ThinkPad T580, and the type code starts with 20LA. Other type codes share this name: 20L9.