I did have a flash drive plugged into the other USB port but removed it just to eliminate a power supply issue but there was still no activity from the mouse. Only when I used a powered hub did it work. I agree that 5v/2a should be sufficient, which is why my thoughts turned to some kind of possible internal shielding issue in the X1 itself that may be interfering with the 2.4Ghz signal with a receiver plugged directly into the box?
Onscreen keyboard There seems no way to hide the onscreen keyboard. This hampers things when needing to input form data where clicking on the online form then loses all the info entered. It also hinders being able to continually check data that has been entered for accuracy on the fly.
Navigation bar buttons The Home button is usually to be found in the middle, so the current makeup is not what we would normally see as a default on most android devices.