Elgato Thunderbolt™ 3 Pro Dock supports two Thunderbolt™ 3, two dedicated USB-C, and two USB 3.0 ports, a built-in DisplayPort, SD and Micro SD card slots, Gigabit Ethernet, plus a front mic-audio port anda rear amplified audio output.
Displayport Output: up to 4096 x 2160px at 60 Hz
Thunderbolt 3 Output: up to 5120 x 2880px at 60 Hz
Dual Displays: up to 4096 x 2160 at 60 Hz each
4K60 over HDMI 2.0 supported using active adapters (not included) via Thunderbolt and DisplayPort.
Video output format and frame rate may be limited by host capabilities.