I can't use all three xbox usb ports at the same time.

Hi, I hope you're doing great out there. I am an Independent advisor and I am here to help you in regard to your concern.

To fix this, please perform a power cycle on your console by following the steps below:

POWERCYCLE CONSOLE​​​

​​​

1. Turn off your console by holding the Xbox button on the front of the console for approximately 10 seconds. The console will turn off. ​​​

2. Turn your console back on by pressing the Xbox button on the console or the Xbox button on your controller. ​​​

If that didn't work resetting the console keeping games and apps will be the next option. Don't worry because as long as you're connected to Xbox Live your saved progress, games, will not be deleted. It will remove all of your accounts but you can add all of them later on.

Press the Xbox button to open the guide.

Select Profile & system > Settings > System > Console info.

Select Reset console.

Reset and keep my games & apps.

What devices are you plugged in question mark there’s a limit to how much power the ports have to give.

@dbole007

You can use any of the three USB ports on the Xbox One (2 in rear, 1 in side). They are all USB 3.0 and there is no difference between them.

I have used each of the three ports with no issues at various times.

All three are USB 3.0:

support.xbox.com/.../usb-port-use

Then again, that page needs to be updated as the first note is now no longer true.

I'm not sure, however, why you would have issues only with the USB ports on the rear.

I tried plugging the controller via usb in all three USB ports and with two different USB cables and every time the message says there's no controller connected via USB when I try to downgrade the firmware.