Lenovo M5800 Desktop - Manual (Page 102)

2. Remove the two screws that secure the WiFi card module to the WiFi adapter card.
Figure 35. Removing the screws that secure the WiFi card module
3. Pull the WiFi card module out of the mini PCI Express slot to remove it from the WiFi adapter card.
Figure 36. Removing the WiFi card module
Installing the WiFi units
To install the WiFi units, do the following:
96 Lenovo M5800 Hardware Maintenance Manual