apple digital av multiport adapter

The USB-C Digital AV Multiport Adapter lets you connect your USB-C-enabled Mac or iPad to an HDMI display, while also connecting a standard USB device and a USB-C charging cable.

This adapter allows you to mirror your Mac or iPad display to your HDMI-enabled TV or display.

3840x2160 at 60Hz on:

iPad Pro 11-inch, iPad Pro 12.9-inch (3rd generation and later), MacBook Pro (16-inch, 2019), MacBook Pro (15-inch, 2017 and later), MacBook Pro (13-inch, four Thunderbolt 3 ports, 2020), MacBook Air (2020), iMac (Retina 5K, 27-inch, 2017 and later), iMac (Retina 4K, 21.5-inch, 2017 and later), and iMac Pro (2017 and later)

1080p at 60Hz or UHD (3840 by 2160) at 30Hz on:

iPad Air (4th generation), MacBook Air (2018 and later), MacBook Pro (13-inch, 2016 and later), MacBook Pro (15-inch, 2016), iMac (non-Retina, 21.5‑inch, 2017), and Mac mini (2018)

from:

USB-C Digital AV Multiport Adapter - Apple

Other resolutions and refresh rates are not officially supported so may or may not work. Your best bet is t use a Thunderbolt 3 /4 to Display Port adapter instead.