2.0 USB/Firewire [2-IN-1] Cable for iPhone New Apple OEM retractable USB + 1394 Y cable. For use with Apple iPod Nano, iPod 3G, iPod 4G For use with iPod Photo, U2 and Video iPods Allows the FireWire cable to connect to the iPod power adapter to charge while synching music. It replaces using 2 cables and is very convenience for travel, Each cables extend up to 30".