The Thunderbolt Cable features two independent channels for super-fast data transfer to your Mac. The Thunderbolt 2 technology on this cable allows bonding the two channels for a rapid 20GB/s speed. You can connect this cable to the Thunderbolt-enabled device and port on your Mac. Connect a Thunderbolt-equipped Mac in target disk mode to another Mac for fast data access or system migration, or network two Thunderbolt-equipped computers. It is black in colour and is 0.5m in length.