You can connect a Mac or iPad Pro with a USB-C port to the HDMI display using the Multi-Port USB-C/Digital AV Adapter. In addition, you can connect a standard USB device and a USB-C charging cable. This adapter allows you to mirror your Mac display on a TV or HDMI display.
Simply connect the adapter to the USB-C or Thunderbolt 3 (USB-C) port of your Mac or iPad Pro and then use an HDMI cable (sold separately) to your TV or projector.
The standard USB port is suitable for connecting a flash storage, camera or USB cable to sync and charge iOS devices. And connect the USB-C port to charge your Mac or iPad Pro.
3840 × 2160 at 60 Hz with models:
11-inch iPad Pro, 12.9-inch iPad Pro (3rd generation), MacBook Pro (15-inch, 2017 and later), iMac (Retina 5K, 27-inch, 2017 and later), iMac (Retina 4K, 21.5-inch, 2017 and later) iMac Pro (2018)
1080p at 60 Hz or UHD (3840 × 2160) at 30 Hz with models:
MacBook Pro (13-inch, 2016 and later), MacBook Pro (15-inch, 2016), iMac (non-Retina, 21.5-inch, 2017) and Mac mini (2018)
Ports:
1x HDMI
1x USB
1x USB-C