This is a 6ft USB 3.1 Type (C) male to HDMI (4K) male adapter cable with aluminum housing. It allows your USB 3.1 (C) equipped MacBook®, laptop or PC to connect to any HDMI (4K) 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.