I am looking into used/refurbished old Dell Precision workstations, possibly something in the T5610 or T5810 line. Many of the extreme budget ones don't come with an operating system installed, or in many cases don't even come with a SSD or HDD at all to put an OS on. It costs quite a lot more to include Windows with these. What I want to know is do these systems have a digital Windows OEM key embedded in the motherboard anyway so all I would have to do is install Windows and it will successfully activate? Is the additional fee the resellers are charging to include Windows basically just an installation fee? Or do these actually not have a license embedded in the motherboard (Or could it have somehow been removed?) and they actually are charging for a legitimate license?