This is a Dell Dimension XPS R450. It is a junk item, with only power-on confirmation. I cannot confirm its operation because the cords and other items are missing. The main unit only. It seems to be a PC for controlling and analyzing optical film thickness measurement equipment. I don't know the details. Please refrain from purchasing if you are a nervous person or if you are looking for a perfect item, as this is a used item. Also, it will be delivered in simple packaging.