I am trying to construct a Foot Switch for a camera at a dental office; however, I am running into a bit of trouble. This guide http://www.petapixel.com/2011/01/19/how-to-build-a-diy-camera-foot-switch/
has been a great help although it is not the same setup as mine. If we go from the computer we have a USB to DB15 female "gameport adaptor" from there we have a DB15 male going to a MONO male end, and from that we have a MONO female end going to another end that I am not too sure what it is called. I have attached the image of the end that I do not know the name on to this question. If anybody knows please let me know as soon as possible I would really appreciate it.