Just like another reviewer said, this also works in a Dell Vostro 470. How nice of Dell not to include a hard drive caddy in their case. Buying this saved me the aggravation of calling them and jumping through hoops for them to ship me another one.This caddy is very easy to install, it snaps right onto the hard drive then slides and snaps right in place.Meanwhile I'm still trying to figure out why Dell insists on mounting their hard drives upside down where the circuit board is more likely to collect dust. Hmmm.