A high quality Mini display port for mini display port cable with he at both ends. The cable comes with a 3-year warranty and supports up to 4k at 75Hz or e.g. 5k at 30Hz. The high-speed screen also needs a cable like this as it clears 1080p at 240Hz or 1440p at 165Hz.
Mini Displayport cable that works from Mini Displayport/Thunderbolt Unit for Mini Displayport/thunderbolt unit. The cable is 2 meters and can be used on all PCs that have Dini Displayport, Thunderbolt and Thunderbolt 2.