Thunderbolt technology supports blazing-fast data transfer with two independent channels of 10 Gbps each. Use the Apple Thunderbolt Cable to connect your Thunderbolt-equipped peripherals to your iMac, Mac mini, MacBook Pro, or MacBook Air.
With Thunderbolt, you get superfast data transfer speeds and huge expansion capabilities. It features two 10-Gbps data channels per port, which means data transfer is up to twice as fast as USB 3 and up to 12 times faster than FireWire 800.
From the Manufacturer
Apple's Thunderbolt cable enables you to connect a Thunderbolt-compatible Mac with Thunderbolt-equipped peripherals such as hard drives, displays, video capture devices, and more. Thunderbolt technology supports blazing-fast data transfer with two independent channels of 10 gigabits per second (Gbit/s) each. The Thunderbolt cable can also be used for Target Disk Mode between two Macs that support Thunderbolt. It measures 2 meters in length (78.75 inches).
Compatible Apple Computers
MacBook Air, MacBook Pro, iMac, Mac mini (2011 release and later)
Revolutionary Thunderbolt Technology
Developed by Intel with collaboration from Apple, high-speed Thunderbolt I/O (input/output) technology delivers an amazing 10 gigabits per second of transfer speeds in both directions. The Thunderbolt port allows you to connect to new Thunderbolt-compatible peripherals as well as existing USB and FireWire peripherals using simple adapters. You'll be able to move data up to 20 times faster than with USB 2.0 and more than 12 times faster than with FireWire 800, and you can daisy-chain up to six high-speed devices without using a hub. Thunderbolt also supports DisplayPort for high resolution displays and works with existing adapters for HDMI, DVI, and VGA displays.