Duplicate one SATA Hard Drive onto three Hard Drives simultaneously Create 3 exact copies of a source SATA drive simultaneously, without having to connect to a computer Access up to 4 SATA hard drives simultaneously over a single USB 3.0 or eSATA connection Dual, variable speed fans allows you to adjust the amount of cooling for any kind of environment or drive type The SATDOCK4U3RE USB 3.0 and eSATA 1-to-3 Hard Drive Duplicator docking station enables you to duplicate/clone a single SATA hard drive to up to three other SATA drives simultaneously, as a standalone device. The duplicator can also function as a regular 4-bay hard drive docking station, by connecting to a host computer system. Large capacity drives (tested with up to 4TB 3.5" and 1TB 2.5"" drives per bay) can be used to greatly enhance your computer’’s storage/backup capabilities. Able to perform 1:3 sector duplication, including HPA, from a single SATA drive onto three others simultaneously (at a rate of up to 72 MBps), the duplicator/docking station can save you time and effort. As an external HDD dock, it can be connected to your host computer through USB 3.0 or eSATA, providing data transfer speeds up to 5 Gbps or 3Gbps respectively, from the hard drives to your computer system. Features Quick and Secure Erase functions and support for IDE hard drives using the included SATA to IDE hard drive adapter (SAT2IDEADP). What’s in the box SATA Duplicator Dock SATA to IDE Adapter SP4 to LP4 Power Cable 40-pin IDE Cable Package of Mounting Screws 44-Pin to 40-Pin IDE Cable USB 3.0 Cable eSATA Cable Universal Power Adapter + 3 Power Cords Instruction Manual"