I have a 21" color monitor CRT by SUPERMAC, model thz8175sktkw. It works, I have a mac cable for it, maybe a power cable. It is a standard computer power cable. The monitor takes a 13w3 connector. Like you would see on hi end workstations in the 90's. Maybe you have an old Sgi, Sun, NeXT? Or you like the CRT quality? I'm not sure how much it has been used, looks nice. Missing door on front. Open to offers, highest offer in first 24 hours gets it. I got to get rid of it, it is big!