I don't know about the Quado 4000, but with the FX3800 I had a hell of a time tracking down a 3 pin stereo bracket. I eventually was directed to a vendor that sold a bracket by an engineer from NVIDIA. PNY Technologies PNQFX3800 Stereo Bracket for Quadro FX 3800. This will plug directly into the board for the 3800, it probably will for the 4000, but I'd check the graphics card diagram first.
Also, it took forever to find out how to get it to work with NVIDIA 3D vision. As it turns out, you have to set stereo mode to 10 in the config file. I know it doesn't say that anywhere; they always say to set to 3 for hardware stereo. This will not work if you buy the 3 pin DIN and plug it into the board yourself. -Joe Watts
