I currently have a mid-2012 MacbookPro that is connected to a 27" Thunderbolt display. I also have a 17" Samsung Syncmaster that only has VGA & DVI port on it. So I bought the MiniDisplay-to-DVI converter and tried hooking it up to the TBD's thunderbolt port.
It didn't work. The TB port doesn't recognize the monitor at all. When hooking the monitor up directly to the MBP, it seems to work fine. Are there compatibility issues when using the MiniDisplay-to-DVI converter?