Like the Vantec NexStar, the MB559 is only an enclosure. You need to provide your own SATA hard drive in order for it to work (and only SATA - the enclosure is not compatible with any other standard, such as IDE or SCSI). The MB559 offers USB 2.0 and eSATA connectivity. The retail package comes with an external power supply, a USB cable, a SATA cable, and an eSATA port bracket that you can install in a desktop expansion slot (provided your motherboard supports SATA, of course). The rear panel also sports a micro-security (Kensington style) slot.



Link: HardOCP