"Each of the ten keys have five degrees of motion that can be preprogrammed to control effects,
software, or multimedia via USB. Once programmed, SoftStep can function disconnected from the
computer for more freedom. "
So it seems that you don't even need the usb cable after you've programmed it....... maybe it sends the midi to the computer through bluetooth?
A MIDI pedal is indeed what it is! :-))
It uses USB to send MIDI into a computer.
The same USB cable also feeds it with electric power.
Watch the info videos at http://www.keithmcmillen.com/,
they are very descriptive.