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== USB Device Issues: Power Saving Feature Causes Problems ==Mouse clicks sometimes aren't registered on a USB mouse, USB printer communication sometimes fails, or it seems that the USB port is sometimes unavailable, at random, even during use. This _can_ sometimes be caused by a power management feature in the USB Root Hub device driver of Windows XP, Vista, and 7. The occasional mouse click not being recognized or registered on a mouse that is verified to be good can be the result of this according to what users have reported.#In the Device Manager dialog box, expand Universal Serial Bus controllers.#Right-click USB Root Hub and then click Properties.#In the USB Root Hub Properties dialog box, click the Power Management tab.#Remove the check from the Allow the computer to turn off this device to save power check box. Repeat steps for each USB Root Hub.