Released in celebration of M-Audio’s 20th anniversary, the Midiman MIDISPORT 2×2 Anniversary Edition multi-port USB MIDI interface delivers a new look and enhanced functionality. The compact interface addresses 32 x 32 discrete channels of MIDI I/O via USB, making it ideal for simultaneously connecting multiple MIDI devices to your computer, as well as eliminating delays associated with long MIDI THRU chains. Standalone functionality also gives you MIDI throughput and merge capabilities. Bus-powered architecture provides the option of totally mobile operation..     2-in/2-out MIDI interface > 32 discrete MIDI input channels, 32 discrete MIDI output channels standalone functionality > MIDI merge and THRU USB bus power > requires no external power supply class-compliant operation with Windows XP, Vista and Mac OS X > true plug-and-play functionality compact and lightweight > mobile or desktop use