Sonnet Technologies USB 3.0+eSATA Thunderbolt Adapter Connects one 5.0 Gb/s USB 3.0 port and one eSATA port to computers with Thunderbolt ports 10 Gbps Thunderbolt interface-Enables fast data transfers between drives and computer Flexible 5" (125 mm) Thunderbolt cable connects directly to your computer or at the end of a Thunderbolt daisy chain eSATA port supports drive enclosures with port multipliers; eSATA port and USB port support drive enclosures with hardware RAID controllers No AC power adapter required