2.5" 3.5" Dual SATA OTB Dual HUB USB 2.0 eSATA Hard Drive Docking Station (White) Support Dual SATA hard disk reading at the same time. It can be disassembled without any tools & supports hot plug. Offline support for hard disk cloning/copy,when it do not connect the computer hard disk can be realized as clone/copy. LED lights can indicate the situation of the power and the statement of readingand writing. Support Window98/ Me / 2000 / XP / Vista / Win 7/ Mac operation system 9.X/10.X / Linux. One backup Function(USB port can only use).