Our smallest and simplest usb midi interface usb uno offers basic 1 x 1 operation and bus powered mobilityand even comes with its own built in usb and midi cables what could be simplerrrfeatures r 1 in1 out midi interface r 16 midi input channels r 16 midi output channels r bus poweredrequires no external power supply r extremely compact and lightweight for mobile or desktop use r built in usb and midi cables