With Thunderbolt, you get superfast data transfer speeds & huge expansion capabilities. It features two 10-Gbps data channels per port, which means data transfer is up to twice as fast as USB (Universal Serial Bus) 3 & up to 12 times faster than Fire Wire 800. Use the Apple Thunderbolt cable to connect your Thunderbolt-equipped peripherals to your i Mac, Mac mini, Mac Book Pro, or Mac Book Air. The cable can also be used for target disk mode between two Mac computers that support Thunderbolt, or to use an i Mac as a display for a Mac Book Pro equipped with Thunderbolt.