Lenovo V480 Hardware Maintenance Manual page 65

Removal steps of I/O board
1
Remove the screws , and then detach the cable.
Step Screw (quantity)
1
M2 × 6 mm, flat-head, nylon-coated (2)
When installing: Make sure that the cable is attached firmly to the system board.
Color Torque
Black
3.0 kgfcm
.
Chapter 7 Removing and replacing a FRU
59