To enable this tab, set the user environment variable DEVMGRSHOWDETAILS to 1. If a driver handles the GUIDPOWERDEVICEENABLE or GUIDPOWERDEVICEWAKEENABLE WMI class GUIDs, Device Manager displays a Power Management tab on the device. Drivers that support power management can automatically enable the Power Management tab for the device property sheet in Device Manager. 2 minutes to read T S D T In this article. Device Manager Power Management Tab Missing Windows 10 Desktop To disable this setting in Device Manager, expand Network Adapters, right-click the adapter, click Properties, click the Power Management tab, and then clear the Allow the computer to turn off this device to save power check box. That seems to have gone missing in Windows 10. In Windows 7, you used to be able to see a Power tab inside the USB hub's device manager properties that showed the current draw for each device connected to the hub.
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