Yeah, but flexibility is restricted. In an emergency, or later in life, you can connect a SATA drive via USB, but not a SAS drive.Perfect it's sas only because the sas drives are built to last for enterprise use, which is why people are not hesitate to use them even though they have hundreds of TB written and many hours of use. Also it makes them in "less demand" for the general population so lower price for us! Most people in the general world and ebay doesn't know how simple it is to get these cheap drives to work by just adding a cheap controller. Let them stick to sata so we can have ours...lol..