This is a USB-C hub, a multiport adapter that expands the connectivity of a USB Type-C port.
It typically provides multiple ports, such as USB 3.0, USB-C, HDMI, and SD/TF card readers, to connect various devices simultaneously.
The HDMI port often supports resolutions up to 4K.
USB 3.0 ports allow for high-speed data transfers, often up to 5Gbps.