On Jan 5, 2008, at 8:20 AM, Jason T. wrote:
I did see the Sun cable with the 4 BNC on US ebay and
thought the
same. I'm not sure if that fourth lead is relevant.
Nope - unconnected it's just floating, the same as if it wasn't there.
SGI 4Ds have always used sync-on-green, so connect your x BNC -> 13W3
up and connect the RGB leads, ignoring the other ones. You do need to
have a SOG-capable monitor.