Who I have the same questioned this topic

Ever since I got the USB720 adapter for use with wireless broadband (about 2 years ago), it has given me nothing but trouble.  For whatever reason, it keeps powering off.  This problem has gotten worse in the past month or so.  I tried changing the power management options in Windows, I tried plugging the device directly into the computer (without the Y-shaped adapter), nothing seems to help the problem.  I'm really annoyed that I have to keep unplugging the device and then plugging it back in every time I want to use the internet.  Please help!