Are you saying that the Dell XPS 200 desktop has the ND 6650A currently installed? From what I have found online, that is a notebook drive with the IDE/ATAPI interface. Why would a desktop have a notebook drive in it?
And the model DVD-116ME has the ATAPI interface which I believe is different than IDE.
It comes with a notebook drive because the XPS 200 was designed to be an ultra comact desktop.
It suffers from excess heat which causes it to sound like a jet engine if you overwork the CPU too much.