Set it to Disabled if you want to stop Windows from powering down any connected USB devices.
Expand the “ USB settings” and then expand “ USB Selective suspend setting“. Click the “ Change advanced power settings” link. When the Power Options window opens, click the Change plan settings link to the right of your current power plan. Press the Windows key + R to open the Run box. Method 2: Enable / Disable USB Selective Suspend Setting To keep this from happening, use the method below to disable USB selective suspend setting. Universal 8-Port Powered USB 3.0/USB C Hub, Aluminum USB Splitter with 6 USB 3.0 Data Ports, SD/TF Card Readers, On/Off Power Switches, AC Adapter, for PC. Note: Windows will clear the check box “ Allow the computer to turn off this device to save power” when the device is unplugged from the USB port or the PC is restarted. Repeat steps 3 and 4 for all of the USB Root Hubs on the computer. Or check it to let Windows turn off USB ports to save power. If you want USB ports to keep supplying power in sleep mode, just uncheck “ Allow the computer to turn off this device to save power“. 
When the Device Manager window opens, expand the Universal Serial Bus controllers branch, then right-click the USB Root Hub device and select Properties. Method 1: Enable / Disable Power Saving on USB Ports I understand that the USB port powered after sleep mode.
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