Lenovo S310 Hardware Maintenance Manual page 126

To replace the WI-FI card, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Place a soft, clean towel or cloth on the desk or other flat surface. Hold the sides of your computer and
gently lay it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer cover. See "Removing the computer cover" on page 89.
4. Remove the system board shield. See "Removing and reinstalling the system board shield" on page 96.
5. Locate the WI-FI card on the system board. See "FRU locations" on page 80.
6. Remove the rear I/O assembly. See "Replacing the rear I/O assembly" on page 94.
7. Disconnect the two cables from the WI-FI card, and then carefully remove the screw that secures
the WI-FI card to the system board.
Figure 51. Removing the screw that secures the WI-FI card to the system board
8. Pivot the WI-FI card upward and lift the WI-FI card out of the mini PCI Express slot.
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Lenovo S310 All-In-OneHardware Maintenance Manual