Easily connect and swap two 25 or 35in sata iii drives through esata or usb 30 the sdock2u33eb dual 2535quot sata hard drive docking station lets you dock and swap hard drives from your desktop or laptop computer simultaneously using a single esata or usb port for fast performance and efficient data transfers when connected through esata the docking station supports full sata iii transfer speeds up to 6 gbps for universal compatibility the dock can be connected through usb 30 with transfer