Using both hands, push the clips holding the RAM stick in outwards, till the RAM stick pops up.

Pull the stick out, and replace by pushing it in the same position you pulled it out, then down till the clips click.

Compatible with 144 pin 4x64-60ns EDO sticks. Some users have reported the ThinkPad can support up to 72 MB of ram using a 64 MB stick, but it has not worked for all users so there is no guarantee!