Lenovo IdeaPad U310/U410 Hardware Maintenance Manual
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Figure 8. Removal steps of system board (continued)
Remove four screws .
U310:
U410:
Step Screw (quantity) Color Torque
M2.5 × 3.5 mm, flat-head, nylok-coated (4) (U310) Silver 2.5 kgfcm
M2.5 × 4 mm, flat-head, nylok-coated (4) (U410) Silver 2.5 kgfcm
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