Lenovo ThinkPad R14 Gen 2 Hardware Maintenance Manual page 90

Removal steps of the system board
Step Screw (quantity)
1
M2.5 × 6 mm, flat-head, nylon-coated (2)
E14 Gen 2/R14 Gen 2
84
E14 Gen 2/R14 Gen 2/E15 Gen 2 Hardware Maintenance Manual
Color Torque
Black 0.294 Nm
(3.0 kgf-cm)