Lenovo ThinkPad X220 4287 Hardware Maintenance Manual page 92

Table 21. Removal steps of system board, DC-in connector, fan, and ExpressCard slot assembly (continued)
a
b
c
Note: The ExpressCard slot assembly is attached to the system board.
Step Screw (quantity)
1
M2 × 3.5 mm, flat-head, nylon-coated (2)
86
ThinkPad X220 and X220i Hardware Maintenance Manual
Platform Controller Hub (PCH)
CPU
Accelerometer chip for the HDD Active Protection
System
Color
Silver
Torque
0.181 Nm
(1.85 kgfcm)