MOTU Traveler-mk3 FireWire Audio Interface Sturdy lightweight construction ready to travel with you anywhere Compact size (14.75 x 9 inches) fits easily into a napsack, briefcase or computer bag and sits perfectly under any laptop Powered by computer Optional battery power standard field battery pack can be used for extended remote recording sessions 28 inputs / 30 outputs (at 44.1/48 kHz)