Instructions for Etisalat D-Link Mobile Router (DWM-157) installation in Windows 10.
The adapter and the service where provided with no instructions, so I had to google a bit. Maybe it works “automatically” for you. Otherwise, try these steps to get the Etisalat mobile service working. The list below looks quite long, but don’t despair, its not that complicated. I just like using lots of numbers for steps.