Do you need an external display for your Mac? It's delicious and it makes you a little more productive at work when you have more space to work on. 
It also provides a better working position to sit right and look straight into a screen rather than sitting and looking down on a laptop. 

External displays are very cheap, a good 27" is available down to 3000kr, it's very little compared to your Mac and especially after how much you get out of an external monitor for your Mac.

Here is the cable, very many good monitors use display port because it is very much in front of hdm or other connectors in special resolution, the connector is specially used on all DELL external monitors, at least all the ones we have seen. 

Display port is delicious because it supports 30Hz, or images per sec, at 4k, pretty much all external 4k or UHD displays support 30Hz but most HDMI connectors don't because first it's HDMI 2.0 that can handle it, Displayport has had it for years , therefore, virtually all displays with display port with a version that supports everything you need.
60Hz is important when working with your monitor because 30Hz, the alternative, makes the screen look like it lags a little, it can be incredibly annoying to look at if one, when youThis is of course only true at 4k or UHD, at all other resolutions supporting anything 60Hz or higher.

With this USB-C to Displayport cable you have a single cable, of good quality that goes all the way from the screen to your Mac, therefore there is less that can break and since the cable is of really good quality you will never need a new one. 

There is no TV that has display port, not one we have seen in any case, therefore this cable is not for TV, it is also very few projector that has display port, but they exist.

Find out Which Mac you have like this.

USB-C / Thunderbolt-kompatibilitet for Mac / iPad / iPhone

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