I think the device you have is named Apple "USB-C Digital AV Multiport Adapter"
Overview
The USB-C Digital AV Multiport Adapter lets you connect your USB-C–enabled Mac, iPad, or iPhone to an HDMI display, while also connecting a standard USB [-A] device and a USB-C charging cable.
Use the standard USB [-A] port to connect devices such as your flash drive or camera or a USB cable for syncing and charging your iOS devices. You can also connect a charging cable [ONLY] to the USB-C port to charge your Mac, iPad, or iPhone.
USB-C Digital AV Multiport Adapter - Apple
About the Apple USB-C Digital AV Multiport Adapter - Apple Support
Connect a Mac that has a Thunderbolt 4, Thunderbolt 3, or USB-C port to an HDMI display, while also charging your Mac and connecting to a USB-A device.