When the Device Manager window opens, expand the Universal Serial Bus controllers branch, then right-click the USB Root Hub device and select Properties. Click the Power Management tab. 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 “.You need one of these: USB - Wikipedia, the free encyclopedia Sleep-and-charge USB ports can be used to charge electronic devices even when the computer is switched off. Normally, when a computer is powered off the USB ports are powered down, preventing phones and other devices from charging.Sleep: In sleep mode, the PC enters a low-power state. The PC’s state is kept in memory, but other parts of the PC are shut down and won’t use any power. When you turn on the PC, it snaps back to life quickly—you won’t have to wait for it to boot up. Everything will be right where you left of, including running apps and open documents.
How to power on or off USB devices in sleep mode?
When you’re charging your phone through an USB port, putting your PC into sleep mode will turn off the power to USB ports, and your phone will stop charging. In this tutorial we’ll show you 2 methods to set Windows to power on or off USB devices in sleep mode. Press the Windows key + R to open the Run box. Type devmgmt.msc and press Enter.
Do I need a sleep-and-charge USB port for my computer?
You need one of these: Sleep-and-charge USB ports can be used to charge electronic devices even when the computer is switched off. Normally, when a computer is powered off the USB ports are powered down, preventing phones and other devices from charging.
What happens when a computer is in sleep mode?
When you use Sleep mode, your computer continues providing power to its RAM. The RAM contains your computer’s working memory and requires constant power or it will forget its contents. Sleep mode continues providing this power, allowing a sleeping PC to wake up almost instantly.
Can I charge my phone while my laptop is in sleep mode?
Now you can charge your smartphones and other USB charging devices even when your laptop is in sleep mode [Even when your laptop screen is closed]. If you face any difficulties, feel free to drop a comment.