Features: 2 in 1 Sata- HDD Holder Dock for 2.5"" 3.5"" USB3.0 Sata- HDD Docking Station Support 2.5in 3.5in sata- -serial port hard drive, up to 6TB With 3 USB3.0 expansion port, USB storage devices such as external USB card readers can expand storage It is also possible to expand the computer USB interface by connecting external devices such as mouse and keyboards Aluminum Alloy- metal frosted shell- for minimalist style;plug- and play, no drivers- needed Specifications: Supported interface: USB3.0 To Sata- Applicable hard drive:2.5inch/3.5-inch Hard Drive Transmission speed: 3-Port USB3.0 5Gbps Size:approx 125x70x75mm/4.92x2.75x2.95in Material:Aluminum Alloy+ABS Support system: Windows-/MacOS-/Linux- Plug-Type: US/EU Power plug POwer Plug:12V 2A Note: Please allow 0-1cm error due to the manual measurment and certain tolerances in the product, please understand. For the safety of your hard disk data, you"d better not to plug- or unplug- the hard disk when it is connected- to the power-source. Package includes: 1PC Hard Drive Dock 1PC Power Plug- 1PC USB Cable 1PC User Manual