The sdock2u33 dual 2535quot sata hard drive docking station lets you dock and swap drives from your desktop or laptop computer simultaneously using a single usb port enhanced with uasp usb attached scsi protocol this hard drive docking station lets you get the most out of the fastest drive technologies such as sata iii 6 gbps solid state drives ssd and hybrid drives with performance up to 70 faster than conventional usb 30 when paired with a uasp enabled host controller see our uasp test