It does. I have the 2012 first macbook pro retina (bought it the day it came out for its 2880x1800 display back in June or July of 2012). You need to be runnin

It does. I have the 2012 first macbook pro retina (bought it the day it came out for its 2880x1800 display back in June or July of 2012). You need to be running Mavericks to use its native HDMI port. I am running the default version it came with (10.7.x) so it only works on the HDMI port under linux (which I primarily use on it) and Windows. That being said I use an Accel Active DP 1.1 -> HDMI 1.4 adapter which makes it work just fine even on older version of mac os X. Actually with that adapter you can use a lot of even much older macs to drive the seiki or any other 4k 30hz display. The adapter: http://www.amazon.com/Accell-B086B-008B-UltraAV-DisplayPort-Adapter/dp/B00ESFEUSG/ref=sr_1_1?ie=UTF8&qid=1389578834&sr=8-1&keywords=accell+hdmi+1.4 http://www.amazon.com/Accell-B086B-008B-UltraAV-DisplayPort-...