Lenovo ThinkPad X390 Yoga Hardware Maintenance Manual page 90

Step Screw (quantity)
2
M2 × L5 mm, flat-head (2)
When installing: Ensure that you attach the connectors firmly.
Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause
the cables to be damaged by the cable guides, or a wire to be broken.
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X390 Yoga Hardware Maintenance Manual
Color Torque
Black 0.181 Nm
(1.85 kgf-cm)