This is the IDEL Optoplex5090 SFF, the main unit only. It's a very compact desktop. I obtained it on Yahoo Auctions as a working unit without an HDD, but replacing the company's PC is too much trouble, so I'm selling it while I can. It has a CPU (11th generation Core i7-1170), 4GB of memory, and an optical drive. There is no HDD (but there is a mounting bracket). I have confirmed normal startup and USB ports. The previous seller said they used it normally in a wireless LAN environment, with no smoking or pets, but I have not confirmed anything other than the above. There is overall dirt. Since it is a used item, there may be other problems. It is treated as a junk item. Please use it for parts or research.