You know, I am not sure. I don't think it is an s cable, optical perhaps? LOL. I know nothing about wires I'm afraid. I am acutally trying to help my husband find the answer to this and I can't ask him right now. I know a little about computers but wires and connections....zip.
yeah...
I don't know without really looking at it.
There should probably have been a set of drivers to set up the projector and from what you said, the guy set it up.
I kinda doubt it's an S cable but without looking, I can't tell you :)