• USB drivers are not installed or need to be reinstalled
• Check for latest version of USB drivers
• Check USB cable and connections
• You must install USB drivers onto your computer before you can connect to the
  terminal over USB. The required USB drivers are provided on the installation CD
  supplied with the terminal, or can be downloaded from http://www.inmarsat.com/Support/detailsupport/bgan/Softwaredrivers/index.htm

Posted in: BGAN USB Issues