The Hiearcool MacBook Pro USB-C to HDMI 7 in 1 Adapter (UCN3286) U873 is a used adapter that allows you to connect your MacBook Pro to an HDMI display. It has a USB-C connector and is compatible with the UCN3286 model. The adapter is made by the brand Hiearcool and comes in a gray color. It also has additional ports for other devices.