The EZ-Connect USI-2535 is a high speed USB 2.0 to SATA/IDE adapter, letting you easily attach an external SATA or IDE drive to instantly access the drive from your PC through the USB port. The Hi-Speed USB interface offers plug-and-play capabilities with bandwidth of up to 480Mbps. The EZ-Connect adapter also comes with a built-in One Touch Backup (OTB) button feature for backing up your files instantly. Just plug the EZ-Connect adapter to your computer, and press the OTB button to automatically run the EZ-Connect backup software program. (*You need to install the EZ-Connect software first to your computer running Windows.) Has a three-in-one drive connector with a 3.5” IDE connector on one side and a 2.5” IDE connector on the other side for attaching IDE drives, and a SATA connector in front to attach the SATA data cable and the 2.5”/3.5” SATA drive. External AC/DC power adapter and SATA power connector are included to supply power to the hard drive. Then simply plug the USB cable into your computer (support for Windows and Mac), and the drive is automatically recognized. No driver installation needed. (*You can only attach one drive at a time).