Update: Ultimate Links PC Tips - USB DSL Cable Modems Error Fix

Some usb dsl/cable modems may get disconnected after a little while. A possible reason that could cause this problem is that in windows xp there is an option that allows the computer to turn off a usb device to save power.

To disable this option:
  1. Click start, highlight my computer, right click and select properties and a window will pop up with the system properties
  2. Click on the hardware tab and press the device manager button
  3. Expand the universal serial bus controllers...

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