Step 1: DO NOT connect USB cable or connect modem to PC/server.
Step 2: Install the USB driver first by clicking on ‘run’. USB driver can be downloaded from here — http://www.mobitek.my/download/USB Drivers/USB Driver for MOBITEK S80.zip
Step 3: Click on ‘next’.
Step 8: After computer is restarted, connect the modem to the computer. In device manager, the connected modem is listed as ‘Sierra Wireless AT Command Port (UMTS)’. In this example, the modem is connected to COM port number 29.