CD features: Dual-Bay SATA HDD Docking Station 3.5inch 2.5 USB3.0 2-Bay HDD SSD Duplicator Dock Station Sata Storage Enclosure Hard Drive Enclosure Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Specification:1. Size: 2.5", 3.5"2. Internal interface: SATA, IDE is not support3. External interface: USB3.04. Support hard drive capacity: 4TB5. Bay: Dual-bay6. Transmission speed: 5/6 Gbps7.Support system: For Windows 2000/ XP/ Vista/ 7/ 8 (Both 32-bit& 64-bit versions )/ Mac OS XFeatures:1. Dual bay HDD SSD docking station2. On/ Off power switch3. LED light indicates, plug and play, no drives needed.4. Transfer rates up to 5 Gbps w/ USB 3.05. Transfer rates up to 480 Mbps w/ USB 2.06. Available USB3.0 for high speed data transfer, reverse compatible with USB1.1 & USB2.0Package Included: (Not included HDD)1 X Dual-ray HDD dock1 X Data cable1 X Screw package1 X Instruction manual1 X Warranty cardNotice:1. The disk just support SATA port, IDE is not support2. Back disk (B) must be larger capacity (eliminate space loss) than front disk(A)3. To avoid your disk file damaged, please don't stop the device when it's under clone function.4. When copy disk, pls make sure disk B is empty, or the former file in disk B will be loss. If disk B has file before, and want to copy from disk A, pls don't use copy function, just copy and paste on computer.5. When copy the disk, pls don't connect the computer, if connect the computer,disk will be under reading, can notsupport copy(device heating is normally, as big hard disk operate will be hot).6. If your disk format is FAT, can not support copy single file more than 4GB(included 4GB), but NTFS is ok, you can change disk format.