hello
today I received my new UR22C (my 1st Audiointerface, am on Audiophile2496)
due to not having the new PC here, just watched what for things are written on the package 
and suprised that there stands “USB 3.0 bus power operation (optional power supply required for USB 2.0)”
can´t test it, because running Win7 on this old PC, the new one will have Win10
long text short:
is it true, that the UR22C is not running on a USB2.0-socket at the PC without an optional power supply?
if so, it´ll go back and I decide carefully again, which audiointerface will replace my M-Audiophile
for confirm or other tips I´m thankful
The Sarge!