This is a 3ft (91cm) USB 3.1 (C) male to DisplayPort male black adapter cable. It allows your USB 3.1 (C) equipped laptop, smartphone, tablet, or PC to connect to any DisplayPort equipped display device, such as a monitor or projector. This also allows for 3840x2160 (4K UHD) high definition viewing on any HD capable device that is equipped with a DisplayPort. Our video adapters are backed by a 3 year warranty and are guaranteed to work the first time.