[izacus]

There is NO first party official Apple DisplayPort adapter. There actually is no first party adapter that would support 4k@60Hz officialy. It gets even more annoying since most 4K monitors made in last year will support 4k@60Hz only over DP, not HDMI.

I went through 2 adapters before I got one that actually worked with the new 2016 MacBook. Which was incredibly annoying.

[kbenson]

I'm not sure how it compares, but I recently went 4k@60Hz with a Dell XPS 15 + docking station.(Dell WD15) + Vizio D40u-D1 (40"). That uses Displayport out of the dock, and a Plugable active DP to HDMI adapter before going into the TV as HDMI as 4k@60Hz. I find it surprising that the monitors, which likely cost 2-3 times what that TV cost ($400) don't support it over HDMI (but then again, the TV doesn't even have DP).

That said, Dell did have a USB-C dock, the TB15, which was plagued by a lot of the same things I hear about USB-C from the Macbooks with USB-C. Wifi and other components stop working intermittently, and on the dock, it flickered intermittently when connected at 4k[1]. Dell just released a new dock, the TB16, and there's a BIOS update for my XPS 15 that says it fixes some docking issues.

1: I seem to recall someone mentioning this was related to the firmware in some connected peripheral, but I'm not sure.

[010a]

That's because you don't need an adapter to use DisplayPort with TB3 (on the MBP). Just purchase the correct [1] cable; the MBP implements DP as an alternate mode.

[1] https://www.amazon.com/gp/product/B01EZH7CKO/

[izacus]

That cable isn't available on this side of the Atlantic, local Apple store only had a faulty DP adapter. For some reason not even the german Amazon had the proper cable in stock or listed.

[seanp2k2]

I want ONE CABLE for everything. That was the promise, I thought. I want 2x4k@60hz + power + 3 USB3 with one connector going to the tbMBP. Apparently this is not possible.

[qyv]

Instead you have 4 identical ports that all do the same things poorly.

[234dd57d2c8db]

The reason 4k monitors only support displayport is because current HDMI can only do 4k at 30hz. DP is a better cable with more bandwidth. Expect DP to overtake HDMI in the future.

[seanp2k2]

I have a Vizio P55-c1 on my desk and with a GTX1080 and a BlueJeans HDMI cable, it works fine at 1080p@120hz or 4K@60hz. It's HDMI 2.0, so another case where just because it plugs in doesn't mean it'll work: https://en.m.wikipedia.org/wiki/HDMI#Version_2.0