** Don't buy this thinking you can slap a hot graphics card into it. Both the power supply and the motherboard are proprietary and aftermarket parts will likely not fit. Speaking from direct experience.This is listed as a Prodesk 800 but both the case stickers and BIOS indicate that it is a Prodesk 600. All other claimed specs appear to be correct but this is a different computer model.If you have a graphics card that DOESN'T require external power you can (probably) safely use it.