the samsung T220 has 1 DVI-D(Dual-Link) and 1 VGA Port(Female) behind the screen. My Black Macbook Has a Mini-DVI port and i have connected it to the screen using a new mini-DVI to DVI-D(Dual-Link) convertor... The screen works fine with a VGA connection to my Desktop... Dont have another DVI screen to check though...When i plug it into the macbook, the screen flashes on the laptop and the display has a message "Check Signal Cable-Analog" when i have supposedly connected a digital cable... The system profiler on the mac does not detect an external display !!! STUMPED !!!!! Anybody help plzzzz...