This is a 6ft USB C (Male) to HDMI (Male) Black Cable, 4K 60Hz. It allows your USB C 3.1 equipped MacBook , laptop or PC to connect to any HDMI (4K, 60HZ) equipped device, such as a monitor or projector. This also allows for high definition viewing on any HD capable device that is equipped with an appropriate port. Our video adapters are backed by a 3 year warranty and are guaranteed to work the first time.