Features: USB3.0 transmission is fast and stable, theoretically can support 5Gbps transmission rate, 1G file 3 second to pass, large file fast speed transmission without waiting. Integrated cooling fan running fast speed transmission hard disk more stable. Sliding cover toolless convenience 3.5/2.5inch hard disk easily converted to external mobile hard, mobile storage more convenient. Highly performances chip to protect data more secure chip to fully enhances the stability and endurances of the transmission operation. for 2.5/3.5inch hard disk support 2.5inch/3.5inch hard disk mechanical/solid disk drive daises Specifications: Product size: about 183x120x37mm/7.2x4.72x1.46in Material: ABS Color: Transparent Interfaces: USB3.0 Suitable for hard drive: 2.5/3.5inch hard drive Power supply: External independent power supply, equipped with 12V2A power supply Package Includes: 1PC Hard disk box 1PC Power Adapter 1PC Usb line note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.