There are HDMI for sound only as well as for video only.. So, yes it does matter but it probably won't come up for you considering most HDMI you see are audio and video. Any gold plated connector hdmi you see on the shelf or online, via Tigerdirect or Newegg would do the job. If you do end up buying the wrong one, they're really cheap. As cheap as $3.00 a cord, so meh.