IBM ThinkPad T43 2668BU7

Laptop, from 2006 2 hardware reports
Memory
Up to 2 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 2 GB seen working.

It takes DDR laptop-size sticks (SO-DIMM).

Slots
2 SO-DIMM slots
Type
DDR SO-DIMM
Most seen working
2 GB; one machine runs 2 GB
Firmware says
1 GB maximum
How sure
2 of 2 reports show this layout
See 8 GB DDR 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 IBM ThinkPad T43 2668BU7?

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

What type of RAM does the IBM ThinkPad T43 2668BU7 use?

DDR laptop-size sticks (SO-DIMM).

Is this my laptop?

Check the model name on the label underneath. It should read ThinkPad T43 2668BU7.