Looking around for the part number (99MO023208) you can find listing dating back nearly a year which is before all the HDMI 2.0 circuitry hit the market. I believe it is safe to say that it is HDMI 1.4 so you'd only get 4K at 30 Hz from it.
All the HDMI 2.0 stuff I've heard coming out in 2014 was due at the end of the year.
After a bit of Google-fu, I've found one erroneously claiming to support HDMI 2.0
. The big catch is that this is a passive adapter which will relay on TMDS pass through when the source has HDMI 2.0 support. Of course without any video card supporting HDMI 2.0 out yet, I think it is safe to say that there isn't any adapter on the market capable of 4k@60 hz via an HDMI adapter today.
Dual Opteron 6376, 128 GB DDR3, Asus KGPE-D16, Radeon 6970
Mac Pro Dual Xeon E5645, 48 GB DDR3, GTX 770
Core i7 3930K@4.2 Ghz, 32 GB DDR3, GA-X79-UP5-Wifi
Core i7 2600K@4.4 Ghz, 16 GB DDR3, Radeon 6870, GA-X68XP-UD4