performance. It can conveniently connect a 2.5"/ 3.5" SATA III SSD HDD to your laptop or computer via its super speed USB 3.0 5Gbps interface, then instantly turn your laptop or computer HDD into a high speed mobile HDD without having to install your drives in an enclosure. It is the best solution for extending more storage capacity, backuping data or upgrading your laptop, desktop, computer and for Ultrabook hard driver through ultra fast USB 3.0, to be your mobile database. Ultra small size and lightweight design make it easy for storage in any laptop bag, carrying case to be carried anywhere. Specification: Material: ABS Color: Black Drive size: 2.5", 3.5" Fan(s): No Interface: USB 3.1 Gen 2 Number of Drive: 1 Hot swap: Yes UASP protocol: Yes Bus type: USB 3.0, compatible with USB 2.0 / 1.1 Compatible drive type(type and rate): SATA USB transfer rate(Max): USB 3.0 5Gbps, USB 2.0 480Mbps SATA transfer rate(Max): SATA3.0 6 Gbps SATA2.0 3 Gbps, SATA1.0 1.5 Gbps Connector: Drive connector: 1 * SATA Data Power Combo (7+15 pin) Receptacle Host connector: 1 * USB 3.0 A (9 pin; SuperSpeed) Male Operating system: for Windows 7 / 8 / Vista, for Mac and more Power: DC 12V (for 3.5" SATA SSD / HDD) Cable length: Approx. 30cm / 11.8in Item size: 35.3 * 5.1 * 0.9cm / 13.9 * 2 * 0.4in(L * W * H) Item weight: Approx. 20g / 0.7oz Package size: 13.8 * 13.6 * 3cm / 5.4 * 5.4 * 1.2in(L * W * H) Package weight: 37g / 1.3oz Package list: 1 * USB 3.0 to SATA 2.5" / 3.5" HDD Adapter Cable Note: The package list without user manual. No external power supply required for 2.5" SATA SSD / HDD. When connecting to 3.5" hard drive, it need to be powered by external power cable, thank you!