FEATURES: This model own the voltage monitor function. When the voltages from external power exceed the range 4.7V-5.3V and 11.3V - 12.7V, the power will be cut off. This function avoid the HDD from voltage shock efficiency. It also use an intellective electronic switch. This can avoid large current flow through the switch contact point. SD3508 have a SATA version SD3508SATA. It is used as SATA HDD USB or eSATA enclosure. - Compatible with USB 2.0 and USB 1.1 standards - Windows 98/2000/ME/XP, Mac compatible - High speed data transfer up to 480 Mbps - "One Button Backup" function - Suitable for all types of 3.5 "IDE hard disk - High quality external power adapter with dual voltage 5V/12V input - Intellective electronic switch - The HDD mount on the PCB directly - Aluminum magnesium alloy material Specification: Name: 3.5" Hard Disk Enclosure Model: SD3508, SD3508SATA Size: 183mm(L)X107mm(W)X31mm(H) Colour: Silver, black, blue, red etc. Transfer rate: Up to 480Mbps 1.5Gbps for eSATA Interface: USB B-type receptacle ESATA receptacle(option)