Thunderbolt, gives you super-fast data transfer speeds and huge expansion capabilities. It features two 10-Gbps data channels per port, which means data transfer twice as fast as USB 3 and 12 times faster than FireWire 800.
Thunderbolt Cable connects your Thunderbolt-equipped peripherals to your iMac, Mac mini, MacBook Pro or MacBook Air. The cable can also be used for target disc mode between two Mac computers that support Thunderbolt, or to use an iMac as a display for a MacBook Pro equipped with Thunderbolt.
The Apple Thunderbolt cable is an active, bi-directional cable used in connecting Thunderbolt equipped hard-drives, displays to Thunderbolt compatible Macs and PC’s supporting: PCI Express and DisplayPort connection over a single cable / Dual channel with 10Gbps per port / Existing DisplayPort devices / Daisy-chained Thunderbolt devices / Ultra low latency.