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Power Management

To manage power, Windows XP, Windows Vista, and Windows 7 will attempt to disable USB when a device is not used. As the default behavior, this often does not work properly and may cause Windows to not properly recognize a USB device (including PhoneTree). To help avoid the PhoneTree hardware from experiencing this issue in the future, make sure the following settings are disabled in Windows:

Windows Vista/Windows 7:
  1. In Windows, click the Windows logo (Start menu), then right-click on Computer and choose Properties.
  2. In the top-left area of the screen, click Device Manager.
  3. Double-click the Universal Serial Bus Controllers branch to expand it.
  4. Right-click on USB Root Hub, and then click Properties.
  5. Click Power Management.
  6. Disable Allow the computer to turn off this device to save power.
  7. Repeat Steps 4 through 6 for each USB Root Hub.
  8. When finished, click OK and close the Device Manager.
  9. Disconnect the Power Adapter from the PhoneTree unit, wait 20 seconds, then reconnect the power cable.
  10. Wait for Windows to recognize your new hardware and loads the drivers. This step may take several minutes.
Windows XP:
  1. Right-click on the My Computer icon on the Windows desktop or in the Start menu.
  2. Click Properties, then click Hardware.
  3. Click Device Manager.
  4. Double-click the Universal Serial Bus Controllers branch to expand it.
  5. Right-click on USB Root Hub, and then click Properties.
  6. Click Power Management.
  7. Disable Allow the computer to turn off this device to save power.
  8. Repeat Steps 5 through 7 for each USB Root Hub.
  9. When finished, click OK and close the Device Manager.
  10. Disconnect the Power Adapter from the PhoneTree unit, wait 20 seconds, then reconnect the Power Adapter.
  11. Wait for Windows to recognize your new hardware and loads the drivers. This step may take several minutes.

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