1) Supports USB 1.0 / 2.0 2) Works for all 2.5" / 3.5" / 5.25" CD, CDRW, DVD, DVDRW, IDE hard disk and SATA hard disk 3) Lightweight 4) Plug and play 5) Caseless design 6) External power supply for device 7) Supports Windows 98SE / ME / 2000 / XP, Mac OS8.6 or above Package included: 1) 1 x USB to IDE / SATA cable 2) 1 x 110 - 240V switching power supply 3) 1 x power supply cord 4) 1 x power cable converter 5) 1 x SATA cable 6) 1 x CD-ROM driver&floppy disk 7) 1 x English manual price is very low because we manufactured this product by ourself. If you want to know more informatin about our products,please send me email. we can offer free samples.