Akitio Thunder2 Quad (enclosure) : Thunderbolt 2 Thunderbolt 2 interface for lighting fast transfer speeds of up to 20Gbps Comes with two Thunderbolt 2 ports, supporting storage and display Large and quiet low speed fan (1900 RPM) for active cooling Removable trays for easy SSD and/or HDD installation Large handle provides comfortable grip when relocating the device