Elgato has released the $150 Elgato Thunderbolt 3 Mini Dock, which features HDMI 2.0, DisplayPort 1.2, USB 3.1 Gen 1, and Gigabit Ethernet ports in a compact body.
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Compatible with macOS 10.13 or later, it takes advantage of Thunderbolt 3 speed with 40 Gb/s throughput. You can plug into both HDMI and DisplayPort interfaces to simultaneously drive two displays at up to 4K resolution and 60 frames per second.
You can also connect to the fastest wired networks with a Gigabit Ethernet port, and power peripherals with USB 3.1 Gen 1. The Elgato Thunderbolt 3 Mini Dock measures 4.1 x 2.2 x 1 inch and weighs 4.4 ounces.