Remove The Wlan Card - Lenovo IdeaPad S740-15IRH Hardware Maintenance Manual

Figure 4. Disconnect the cable and remove five screws.
Screw specifications
M2 x 4
Step 2. Remove the battery pack.
Figure 5. Remove the battery pack
Go to https://support.lenovo.com/partslookup
part:
Battery pack

Remove the WLAN card

Make sure the following FRU (or CRU) have been removed.
28
Lenovo IdeaPad S740-15IRH Hardware Maintenance Manual
Number of screws
5
to look up the Lenovo part number of the following replacement