The USB MIDISPORT 2x2  Anniversary edition is a compact multi-port MIDI interface providing 32 x 32 MIDI channel addressing. The 2x2 is ideal for connecting a number of MIDI devices to your computer, as well as eliminating delays associated with long MIDI Thru chains. Bus-powered operation means that you can use it anywhere. Standalone functionality also gives you MIDI throughput even when your computer is off.