C2G54458 | USB-C Mini Dock With HDMI, 2x USB-A, Ethernet, & SD Card - 4K 30hz
This mini dock includes an HDMI port with a resolution up to 4K (3840 x 2160) at 30Hz for high definition audio/video. HDMI: Resolution up to 4Kx2K @ 30Hz. 4K HDMI: Connect to a 4K display via the HDMI port.