lost connection

I use a Digi anywhere USB/14. Unfortunately, he always loses the connection. The dongle will be about every 5 minutes a new connected thing that comes to an interruption of the application. Is this normal.

Update the driver and firmware version of the AUSB/14

What type of USB devices are connected to AUSB?
what is the driver and the firmware version of AUSB?
Try connecting USB mouse or Keyboard to AUSB and check the connectivity?