Help! Ifixit HD replacement guide says 2 display cables, I have 3
I purchased an iFixit kit to replace the hard drive on my 2014 iMac 21.5” model 2805. I got to the point where one needs to unplug two display assembly cables : the display data cable and the display power cable. Which I did as instructed, but then realised there is a third cable between the board and the display. I don't know what it is and it doesn't seem to want to come out easily. I don't want to damage anything. The one that is still attached is on the far right. I have a picture but can't figure out how to attach it here. Thanks in advance!
Here I hope is the picture of my computer's internals