Working all in one 2006 Sony computer but as you can see from the pictures it says dell so I am guessing somebody upgraded it and changed some of the operating system at some point. I found the computer in a storage unit with the key board as also shown in the photos and it works well for still having vista on it. That said I don't know much else about it and I am selling it as is I'm sure somebody that knows what they are doing could upgrade it or restore it and have it as a great computer, as it is it works well I used it a little bit but I found a 2000 dollar laptop new in box so I just have no need for this thing.