NUC6i3SYH and Win10
I am using my NUC as an HTPC and it is desirable that the outboard DAC, which is connected through and powered by a USB port power down when the computer goes into sleep mode. It appears that all the USB ports still provide power when the computer is powered down. Is that true, and if so, is there a way to power them down when in sleep mode.
- USB General
Actually, that's not quite correct. In BIOS, you have the ability to configure whether or not the USB ports are powered while in S4 (Hibernate) and S5 (Powered Off). You do not have this ability for S3 (Sleep); the USB ports are always powered in S3 (Sleep).
Scott, is right. You can only configure these two options within the BIOS.
If you disable "Allow the computer to turn off this device to save power" from Device Manager should help, this will keep the USB ports inactive during sleep mode.
Amy, thanks but it's still not working
- Device was plugged in to the blue ports.
- Just to make sure that I am following the instructions:
Universal Serial Bus Controllers
Intel USB3.0 extensible Host Controller - 1.0 (Microsoft)
Power Management Tab
uncheck "Allow computer to turn off this device to save power"
Are my actions correct?
I tried changing something else in the power Options, and I have some interesting results. These are my new steps;
- Go to Power Options.
- Click on change Advanced settings.
- Change plan settings for Balanced.
- Click on Change advanced power setting.
- Find USB settings, and click on USB selective suspend setting.
- Disable it.
Once I followed these steps each time I plugged a couple of USB devices to charge they did not get any power; however, this only happened with some devices. For example, I plugged an iPhone and a Sony device and these did not charge, but I tried with some Samsung phones and they were powered.
Hello /thread/111539 KME
In states (S1-S3), volatile memory is kept refreshed to maintain the system state. Some components also remain powered so the computer can wake from input from the keyboard, LAN, or a USB device, and here are my results from testing with "Portable Device Charging Mode" set to "OFF" under the USB Configuration in BIOS:
- Clicking "Sleep" on the Power Menu still provides power to the USB blue connectors
- Either selecting "Hibernate" on the Power Menu if available or pushing the power button on the unit to "Hibernate" the system doesn't provide power to the USB blue connector.
This is the expected behavior.
That seems to do the trick. I didn't change anything in the bios but when I add hibernate to the power options menu and select hibernate it seems to power down the USB ports and the device that is attached. It does create a minor inconvenience in that the computer can no longer be awakened using the keyboard because the keyboard dongle is plugged into one of the front (yellow) USB ports and they appear to be unpowered. So I will need to wake the computer with the power button but that is OK in my configuration and it is good to not have my DAC powered all the time.
I found that disabling Hibernation which saves a file the size of your RAM on the HD also disables the USB power for waking up from sleep mode, but that works in hibernation mode.
Does disabling Hibernation disable USB power in sleep mode? It certainly disables selective wakeup.
- Control Panel > USB HUBs> Power settings > choice, also HID devices> power>
- Control Panel > Power > settings for Selective power shutdown
It worked ! kudos
I made other changes too in ASUS Haswell i7 tower bios;
CPU C states [Auto]> Enabled
C7 Latency [Long]>[Short]
Legacy USB Support [Enabled]>Auto]
Intel xHCI Mode [Auto]->[Smart Auto]
EHCI Hand-off [Enabled]->[Disabled]
Generuc-Multiple Reader [Auto]->[Hard Disk]
USB Support [Partial]->[Full Initialization]
It seemed slower than it was in going to sleep and waking up, but this is a different installation of Win7 x64. It sure works better than Win10, Win11 after a lot of tweaking and disabling stuff.
I have a similar issue on my NUC 11 PAHi7. I have an external HDD in a hdd case attached to the USB connection at the back of the NUC.
Whenever I shutdown my NUC, the HDD stays on (I can feel the drive is still spinning). I tried several BIOS settings (like no power to USB while powered off) and a bunch of settings in Windows. None of it mattered.
I hope a BIOS update can fix this - i.e. when we select the option to not supply power to USB when it's powered off, really do that - i.e. not supply power.