3Gstore Antenna Jack Locator: CLEAR Hub Express
The connector on the Hub Express is RP-SMA female. To connect an antenna, you must use a N/Female to RP-SMA/Male adapter (and if you are using an antenna cable ending in FME/Female, you must ALSO use an FME/Male to N/Male adapter to allow your cable to connect to the RP-SMA adapter). While using an external antenna, you need to flip the switch (see arrow) to "ENABLE"