uperSpeed USB 3.0 : transfer rates up to 5 Gbit/s ,- Support for HHD/SSD SATA/IDE hard drives in 2.5"/3.5" format Support for CD-ROM/R/RW and DVD-ROM SATA drives in 5.25" format ,- Backward compatible with USB 2.0/1.1 ,- Hot-swappable ,- Plug & Play ,- With 12 V / 2 A power supply unit ,- Compatible with all operating systems