Don’t put that there!
I had a short run at in-house QA at a fairly large games publisher.
We were working on multiplayer testing, so each desk had several different cables, all different colours, connecting you to all sorts of different internet connection types.
Part of our induction speech:
“Red (ADSL) and blue (Cable) to consoles and gaming PC’s, and yellow (internal network) to work PC’s. If you plug anything into the wrong place, clear your desk and leave.”
One of the guys who was employed alongside me was yellow-blue colourblind.
He didn’t last very long.