The module's key
notch should meet
the connector's break.
7. Press the module down and x the module in place using one screw.
8. Locate the SMA antenna holes on front panel. Remove the plastic plug to
make an antenna hole. Keep the plastic plug for any possible restoration
in the future.
FPC-7900
FPC-790X
9. From the other end of the RF antenna, which is an SMA connector,
remove the washer and the nut. Note the SMA connector has the form of
a threaded bolt, with one at side.