M-Audio Avid USB MIDISPORT 2X2 2-In/2-Out Bus-Powered

Features
• 2-in/2-out MIDI interface (32 discrete MIDI input channels, 32 discrete MIDI output channels)
• Standalone MIDI merge and THRU functionality
• 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