Lenovo Thinkpad L570 Hardware Maintenance Manual page 104

Removal steps of the system board assembly
When installing: Ensure that the connectors are firmly attached to the system board assembly.
Step Screw (quantity)
8
M2 × 3 mm, flat-head, nylon-coated (4)
9
M2 × 5 mm, flat-head, nylon-coated (1)
98
L570 Hardware Maintenance Manual
Color Torque
Black 0.181 Nm
(1.85 kgf-cm)
Black 0.181 Nm
(1.85 kgf-cm)