03-09-2009, 09:24 PM
Don't order until you get someone else to confirm this, but I ordered a mini-DVI to DVI adapter when I wanted to connect a second monitor to my iMac, which is a 20" like the one you describe. I wasn't connecting an Apple monitor, but I seem to remember that the days of them having a unique connection are long gone, aren't they?
This is the one I bought:
http://store.apple.com/us/product/M9321G/B
This is the one I bought:
http://store.apple.com/us/product/M9321G/B