The MOTU FastLane installs in seconds and opens your computer to a world of music software. A unique MIDI thru button allows you to play to your gear even when your computer is turned off without having to disconnect cables. The audio interface is engineered to operate with multiple USB devices. In/out status lights for each port provide easy monitoring of transmissions. No power required. Includes USB cable. MOTU and Apple have been working closely together to ensure a smooth transition to Tiger (Mac OS X 10.4) for you. Tiger compatible versions of MOTU products are now shipping. In some cases, you may need to download the latest driver package or software update.