M-Audio MIDISPORT 4x4 Anniversary Edition

4-in/4-out MIDI interface (64 discrete MIDI input channels, 64 discrete MIDI output channels)

Connection and power via USB—requires no external power supply

Class-compliant operation under Windows XP, Vista and Mac OS X—no additional drivers required

MIDI activity indicator for each port

Compact and lightweight for mobile or desktop use

Compatibility

Class-compliant

MME

Mac OS X Core MIDI