IBM X220 - Manual (Page 83)

Table 18. Removal steps of PCI Express Mini Card for wireless WAN
In step 1 , unplug the jacks by using the removal tool antenna RF connector (P/N: 08K7159) or pick the connectors
with your fingers and gently unplug them in the direction of the arrow.
Step Screw (quantity) Color Torque
2 M2 × 3.5 mm, wafer-head, nylon-coated (1) Silver 0.181 Nm
(1.85 kgfcm)
Chapter 8 . Removing and replacing a FRU 77