Most Option GT (Globetrotter) family cellular data PC Cards support an external antenna using the FME antenna adapter 359917. However, certain Option cards with WLAN (Wi-Fi) support do not support an external antenna. To determine if your card has a port, please see the picture to the right.
Please note that on WLAN/Wi-Fi cards with antenna ports the port itself does not support WLAN - i.e. you can increase your cellular signal but not your WLAN signal even if you use an antenna such as the ARC Wireless Freedom Antenna which itself does support both Cellular/PCS and Wi-Fi frequencies.