Ion xe with Universal Fader Wing

The older universal fader wings should be ok with any old ion.

The newer "Eos Fader Wings are not compatible with Element or any Windows XP devices. Wings require Eos software v2.6.1 or higher to operate." 

so if the ION is an old windows XP one then no, but the later ones yes.

Yes they will work. But you cant "dock" them to the desk. You need to use the power supply and usb cable.