== Preventing Windows from automatically powering down a USB port ==

==== de Joe W4TV ====


 1. In Windows 11, click the Task Bar's '''Start''' icon,  specify {{{Device Manager}}} in the search box at the top of the window, and then proceed to step 3

 1. In other versions of Windows, open the '''Windows Control Panel''' (WCP) and then open the WCP's '''Device Manager'''

    * in Windows XP, run the WCP's '''System''' applet, and then click the '''Device Manager''' button on the '''System Properties''' window's '''Hardware''' tab

    * in Vista, run the WCP's '''System and Maintenance''' applet, then click the '''System''' link in the '''System and Maintenance''' window, and then click the '''Device Manager''' link on the left side of the '''System''' window

    * in Windows 7, Windows 8, and Windows 10, run the WCP's '''System and Security''' applet, and then click the '''Device Manager''' link in the '''System''' section

 1. In the '''Device Manager''', expand the '''Universal Serial Bus Controllers''' entry; for each '''USB Root Hub''' and '''Generic USB Hub''' in the expanded list, 

    a. Select '''Properties''' from the right-click menu, and open its '''Power Management''' tab

    a. Uncheck the '''Allow Windows to turn off this device to save power'''  


 1. Run the WCP's '''Power Options''' applet in the '''Windows Control Panel''' (in Windows 11, click the Task Bar's Start icon and specify {{{Control Panel}}} in Start menu, then run the '''Power Options''' applet) 

    a. Select the Power plan labeled '''High Performance'''; note that it may be necessary to expand the section labeled '''Show additional plans''' in order to see the '''High Performance''' option

    a. Disable the automatic hibernation and sleep options

    a. On Vista, Windows 7, Windows 8, Windows 10, and Windows 11,

     i. follow the '''Change Plan Settings''' link to the '''Edit Plan Settings''' window

     i. follow the '''Change Advanced Power Settings''' link to the the '''Advanced Power Settings''' window

     i. expand the '''USB Settings''' entry, and set the '''USB selective suspend Setting''' to ''disabled''

     i. expand the '''PCI Express''' entry, and set the '''Link State Power Management Setting''' to ''disabled''
 

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