HP EliteDesk 405 G4 Desktop Mini Maintenance And Service Manual page 35

6. Remove the screw (2) that secures the WLAN module to the system board, and then grasp the WLAN
module by the sides and pull it out of the socket (3).
NOTE: You may need to use a small tool, such as a pair of tweezers or needle-nose pliers, to
disconnect and connect the antenna cables.
IMPORTANT: Only disconnect the antenna cables from the WLAN module when necessary, such as
when specifically replacing the WLAN module or the antenna cables. Disconnecting the antennas from
the module poses the risk that they do not get correctly reconnected. For other components that require
removing the WLAN module, such as the system board, remove the module while leaving the antenna
cables connected and place the WLAN module off to the side while removing and replacing the
components.
To replace the WLAN module, reverse the removal procedures.
WLAN module 27