For access, remove these FRUs in order:

1. Battery.

For T400
Step	Icon	Screw (quantity)	Color	Torque
1		M2 × 14 mm, flat-head, nylon-coated (4)	Black	0.167 Nm(1.7 kgfcm)

For R400
Step	Icon	Screw (quantity)	Color	Torque
1		M2 × 17 mm, flat-head, nylon-coated (4)	Black	0.167 Nm(1.7 kgfcm)

When installing: When you attach the palm rest, do as follows:

1. Attach the touch pad connector firmly to the system board.
2. Press the left and right top edges of the palm rest to fit it into place.
3. Push the front side of the palm rest until it clicks into place.
4. Close the LCD cover and turn the computer over. Then fasten the four screws to secure the palm rest.