The MIDI Express 128 is a professional MIDI interface that provides plug-and-play connectivity to any USB-equipped Macintosh or Windows computer. The Express 128 provides 8 MIDI IN, 8 MIDI OUT, 128 MIDI channels and compatibility with all Macintosh and Windows software. The MIDI Express 128 takes full advantage of USB, giving you high-speed MIDI throughput, sub-millisecond timing accuracy, support for "hot-swapping" and plug-and-play expansion. Need to connect another sound module or synth? No p