Lenovo IdeaPad FLEX-14API - Appendix A. Important safety information; Safety notices; Protect yourself from the heat that your computer generates.

4
Figure 9. Detach the connectors
Step 4. Remove 1 screw.
5
Figure 10. Remove 1 screw
Screw specifications
Number of screws
M2.0 x 3 1
Step 5. Remove the Wi-Fi card by pulling it away from the slot.
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Hardware Maintenance Manual