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Windows 7: Turn off usb power

14 Oct 2014   #1

Win7 x64
Turn off usb power

Hi *,

I am looking for a way to turn off/on the 5V power supply for an USB device. The purpose is to reset a uC (not my uC) which is powered via USB.

Is there an API tho achieve this? I found the option "usb selective suspend " for power saving and I thought there is a way to do this.

Kind regards

My System SpecsSystem Spec
14 Oct 2014   #2

Windows 7 Ultimate 64-bit, Windows 8.1 64-bit, Mac OS X 10.10, Linux Mint 17, Windows 10 Pro TP

What is a uC?
My System SpecsSystem Spec
14 Oct 2014   #3

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]

Is that not a hardware Control Unit?

In the Bios settings you should have also a way to turn off some of the usb ports unused, but that is not an external switch and will be permanent when logging into a windows session, therefore you'll have to go back in Bios to renable the ports.
My System SpecsSystem Spec

20 Oct 2014   #4

Win7 x64


uC => micro controller,

It is a measurement product, but the company missed to program a watchdog or a hardware reset. So the only possibility to reset the USB powered uC to turn of the 5V and turn it on again.

So bios is not the solution I like.

Kind regards
My System SpecsSystem Spec
20 Oct 2014   #5
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

Is this a company computer?

Does this company have a I.T. department?
My System SpecsSystem Spec

 Turn off usb power

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