As they say:-
The Uno is a complete USB-to-MIDI solution, equipped with a USB connection to your computer, and a 1-in/1-out 16-channel MIDI connection to your MIDI devices.
The Uno works for Windows and Macintosh operating systems. Its single MIDI In and Out connectors make it perfect for connecting a keyboard or controller to your computer quickly and easily. Since it is powered by the USB port, the Uno is convenient and great for portable use.
Massive Attack live engineer talks design and more
Gaz Williams gives us some insight into the new version