Please look closely at the photos. I don't know much about the product; I only know that it powers on and I can hear all the fans running. The CD tray is in good condition, and it has four Samsung RAM sticks (8 GB each)—so please check everything carefully and feel free to ask if I can help with anything. It also has three 500 GB memory modules; I don't know if they are locked or non-functional. I am selling everything "as-is," but it all looks to be in very good condition. Thank you.