Just got my new GA-990FXA-UD3 all hooked up and working and my first, little problem reared its head.When I shut down the system various USB devices - mouse, powered USB hub and USB hard drive - stay powered up. The only way to shut them off is to flip the power switch on the power supply.Is there anything I can set in BIOS to shut down the USB devices when I shut down the system?
My mouse and keyboard are connected to the top two USB back panel connectors. They lose power when the PC is shut down.
How are the devices you mentioned using the back panel USB ports? Are they using power from the USB ports or are they powered externally?
If they are powered externally then powering off the PC has nothing to do with whether the devices are powered on or off.If the device has its own A/C adapter then powering off the adapter must be used to power off the device.Some powered USB hubs can maintain power to connected devices even when the computer is powered off. The hub must be powered off manually.The way I control everything is with my UPS. I have the computer, monitor, TV tuner, and speakers connected to the "Battery Backup" connections on the UPS. After I shutdown my computer I power off the UPS. When I do this all the devices connected to the "Battery Backup" are also powered down, Something similar could be done with everything plugged into a power strip.
Sorry if I'm to late but newer Gigabyte MBs have a feature called On-Off charge, which keeps USB ports active for charging phones and alike even when turned off. There should be an option in the BIOS to enable or disable it.