I was looking at one of the iMacs I bought yesterday, and noticed this on the back of it. I assume it's aftermarket, as i don't recall seeing anything of this sort before. Both came from the same seller and, as per him, were bought at the same time(one for each daughter). Has anyone run into this before? I haven't hooked up a monitor to it yet. BTW, the seller also threw a big stack of goodies in with the sale, including two Macally swivel bases that integrate a 4-port powered hub, 2 RS-422 ports, an ADB port, and a floppy drive. This was the best prize, though-a Harmon Kardon iSub, aka the iJellyFish. Unfortunately, Leopard deprecated support for these(a little bit of internet searching turned up an installer that adds the needed kexts) but it worked great this evening for testing under OS 9.2 with the(excellent) built in iMac speakers.