Remember Elgato’s Thunderbolt dock? Because it has just been updated, now with two doors Thunderbolt 2 and great news: HDMI output supporting 4K resolution (plus three USB 3.0 and one Gigabit Ethernet). It also features amplified audio output and an optional power source for recharging USB devices. The product costs US $ 230 in the United States.[[Elgato]
On the front side there is yet another USB 3.0 and a microphone and headphone jack.