MIDISPORT 4x4 4-in​/​4-out USB MIDI Interface

MIDISPORT 4x4 4-in/4-out USB MIDI Interface.

• 4-in/4-out MIDI interface > 64 discrete MIDI input channels, 64
  discrete MIDI output channels
  
• USB bus power > requires no external power supply
  
• class-compliant operation with Windows XP, Vista and Mac OS X >
  true plug-and-play functio...