I recently purchased an RGB vandal switch for my PC. I didn't pay too much attention and assumed each color had its own positive and negative lead and you could just plug Red into the power header, ...

You might have seen old display panels, from 3″ to 10″, with 40-pin FFC connectors where every pin seems to be used for some data signal. We call these displays parallel RGB, or TTL RGB, or DPI, and ...