This usb 30 and esata docking station makes it easy for you to connect and swap your 25in or 35in sata hard drives hdd and solid state drives ssd the docking station also has a built in fan that keeps your drives running at an optimal temperature for peak performance and longer drive lifespan with support for either usb 30 or esata host connections this versatile drive dock gives you the freedom to connect to your computer through either port because usb is available on virtually any compute