Hello all, I recently purchased a 2017 27inch iMac to replace my Late 2012 Mac Mini. I knew that the iMac only had a headphone jack but I figured that I could use an adapter to get audio from my soundboard onto the iMac via the headphone jack. I've tried and failed. This is the cable that I ordered that I hoped would fix my problem but I'm not getting anything showing up on the input side when I try to use it. Did I get the wrong cable or is this just not possible in the iMac? I tried out my old iPhone headphones as well and they don't show any input options. I just ordered a USB version that should work but I wanted to see if the users here had any other solutions before I return the cables I purchased.