For half the money this thing works just fine. I needed 1 SSD terrabite, and any alternative new, was more than 2X the price. I stuck in another SSD for back up. It does not have a tray, but these things are light so it just hangs in there with a nylon zip strip. There is a 3rd connection for data, which you can use.Now if you are not very experienced at installing this may be a bit overwhelming, but this is a very powerful machine. Even if you did not your mouse or keyboard: KEEP IT! just get yourself a cheap mouse and or keyboard, because this is a very good deal. When installing software, first download PatchMyPC and from there click all the programs you want. They will install quietly without all the nuisance of having to go to the different software websites. ENJOY