1. Latest model with a built-in driver 3. True plug & play; just plug it to any USB port on pc & it'll install itself 4. 1-in / 1-out MIDI interface 5. 16 MIDI input channels / 16 MIDI output channels2. Unlike others, it requires no driver installation 6. MIDI activity indicators for each port 7. USB bus powered; requires no external power 8. Extremely compact and lightweight 9. Length: 2. 0 m