IOGEAR Thunderbolt Male Cable, Black, 2 Meter/6.8 Feet, GTC02-BK Operates at up to 20Gbps with Thunderbolt 2* Supports raw 4K video file transfer and display simultaneously Daisy chain up to 6 Thunderbolt devices Dual channel, bi-directional data transfer Transfer a full-length HD movie in less than 30 seconds Add 1TB backup in less than 5 minutes