tuchas
Active Member
If you are using a miniDP->HDMI cable, there is another issue to consider. The SP3 port probably supports DP++ (or dual-mode) which electrically turns the port into an HDMI port when you are using a passive HDMI cable. The port on the dock might not support DP++, in which case you will need to buy an "active" cable to handle the conversion for you.
Interesting. I returned the Belkin MDP to HDMI cable I mentioned in a previous post, and bought a $10 6ft Cable Matters MDP to HDMI cable from Amazon. This worked perfectly at half the price. Perhaps this one is an "active" cable. So if you are looking for something similar, check this one out.
http://www.amazon.com/gp/product/B00APLJ58M/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1