Hopefully I can save you some frustration. If you got the TB2 dongle, it won't work. Apple suggests you purchase a third party DisplayPort dongle. Make sure it's DisplayPort 1.2 (that's what lets you do 4k@60Hz). No advice on what to buy though; except check the reviews to make sure it works on the 2016 MBP! (_NOT_ the MacBook! Compatibility with the MacBook means nothing.)