patible with USB 2.0 and USB 1.1 standards,Windows98/2000/ME/XP,Mac compatible 2.High speed data transfer up to 480 Mbps 3.Suitable for all types of 3.5 USB TO SATA hard disk 4.High quality external power adapter with dual voltage 5V/12V input 5. Power switch for safe and convenience 6.The HDD mount on the PCB,Aluminum Magnesium alloy Material 7. Chipset: JM20337 We also offer OEM/ODM service .