Lenovo ThinkPad T61 Hardware Maintenance Manual page 108

Turn the system board over, and then disconnect the PC Card/ExpressCard slots
assembly or PC Card/Smart Card slots assembly or PC Card/4-in1 media reader
slot assembly a from the system board.
When installing: Make sure that the connector of the card slot assembly is
attached to the system board firmly.
100
ThinkPad T61, R61, and R61i (14.1-inch widescreen) Hardware Maintenance Manual
Step Screw (quantity)
M2 × 3.5 mm, flat-head, nylon-coated (2)
1
1
1
a
2
Color Torque
Silver 0.167 Nm
(1.7 kgfcm)