StarTech.com Mini DisplayPort to HDMI 4K Audio / Video Converter - mDP 1.2 to HDMI Active Adapter for MacBook Pro/Air - 4K @ 30Hz - White (MDP2HD4KSW) - video converter - white
Mini DisplayPort to HDMI Adapter, Active Mini DisplayPort to HDMI Video Converter, 4K 30Hz, Mini DP or Thunderbolt 1/2 Mac/PC to HDMI Monitor/TV/Display, mDP to HDMI Dongle - mDP 1.2 to HDMI - White (MDP2HD4KSW).