Lenovo E4325 - Manual (Page 69)

Removal steps of the input/output (I/O) board
Remove the screws 1 , and then disconnect the cable.
1
1
3
2
Step Screw (quantity) Color Torque
1 M2 × 6 mm, flat-head, nylon-coated (2) Black 1.85 kgf-cm
When installing: Ensure that the cable is firmly attached.
Chapter 8 . Removing and replacing a FRU 63