Description: If use for 3.5inch HDD, choose suitable adapter If use for 2.5inch HDD/SSD, no need power supply Main features: The USB 3.0 to SATA Hard Drive Converter allows you to connect any standard 2.5'' or 3.5'' SATA hard driver to your computer via USB 3.0 port at speed up to 5Gbps. Supports OS: Windows 98/2000/XP/Vista/Windows 7/8, OS x Plug and Play,Hot Swapping It is ideal for you to backup files or upgrade your notebook hard driver. It with 12V power supply interface, can connecting 3.5" high power drive . Noted: This item has 12V 2A AC/DC power adapter USB-A 3.0 Male to 2.5" SATA III Hard Drive Adapter USB-A 3.0 Male to 2.5" SATA SSD Hard Drive Adapter USB-A 3.0 Male to 3.5" SATA III Hard Drive Adapter (USB 3.0 to SATA III) Black Color Casing Ultra Hard ABS Casing This USB 3.0 to SATA adapter cable lets you connect a 2.5" or 3.5" SATA hard drive or solid state drive to your computer through an available USB 3.0 port. This adapter/cable supports UASP, allowing for transfer speeds up to 70% faster than conventional USB 3.0 This enables you to utilize the full potential of your SATA III SSD/HDD when paired with a UASP-enabled host controller. This portable, cable-style adapter makes it easy to swap between hard drives without having to install your drives in an enclosure, and features a light-weight design with no external power required, for easy storage in a laptop bag or carrying case. Improved Performance with UASP. UASP is supported in Windows 8, OSX (10.8 or above), and Linux. In testing, UASP performs with a 70% faster read speed and 40% faster write spee