Lenovo ThinkPad Edge E545 Maintenance Manual page 92

Removal steps of the I/O sub card with USB connector and audio jack
When installing: Make sure that the connector is attached firmly to the system board.
Step Screw (quantity)
3
M2 × 5 mm, wafer-head, nylon-coated (1)
86
Hardware Maintenance Manual
Color Torque
Silver 0.181 Nm
(1.85 kgf-cm)