Thunderbolt technology supports blazing-fast data transfer with two independent channels of 10 Gbps each. Mac Models Compatibility : 13-inch MacBook Air , 11-inch MacBook Air , 13-inch MacBook Pro , 15-inch MacBook Pro , 21.5-inch iMac – Thunderbolt 2 , 27-inch iMac – Thunderbolt 2 , Mac Pro Mac mini. Superfast data transfer speeds and huge expansion capabilities.