Lenovo IdeaPad S540-15 Hardware Maintenance Manual page 52

Figure 29. Release the antenna cables from the hooks
Step 2. Disconnect two fan cables from the system board.
Figure 30. Disconnect two fan cables
Step 3. Remove the 3 screws.
Figure 31. Remove the 3 screws
Screw specifications
M2.0 x 3.0
46
Hardware Maintenance Manual
Number of screws
3