I have this slot in my Canon 60D which states it is for a HDMI cable that can be hooked up to a HDTV.  It is supposed to provide a sharper picture so I thought I would get one.  Canon wants $50+ for the cable - no thanks.  On Amazon I found a cable for less than $4.00 - can you believe that?  It works great.  Sorry, Canon, but I have found the price of all your accessories way out of line.