This USB 3.0 to SATA adapter cable allows you to connect any standard 2.5 inches and 3.5 inches SATA hard driver to your computer via USB 3.0 port at speed up to 5Gbps. It supports OS: Windows 98/ 2000/ XP/ Vista/ Windows 7/ Mac OS 9.X/ 10.X/ Linux. The adapter is plug and play, hot swappable, and ideal for backing up files or upgrading your notebook hard driver. It comes with a 12V power supply interface, which can connect 3.5 inches high power drive. Note: This item needs a 12V 2A AC/DC power adapter when used for 3.5inch HDD.