The Echo 11 Thunderbolt 4 HDMI Dock expands the ports on a compatible Apple M1 Mac, an Intel Mac with Thunderbolt 3, or a Windows computer with Thunderbolt 4. It connects over a single Thunderbolt 4 cable that also delivers up to 100W of charging power. Two further Thunderbolt 4 ports let you attach Thunderbolt peripherals directly or daisy chain up to five devices, and a dedicated HDMI port handles video output without needing an adapter. Rounding out the port set are three USB-A 3.2 Gen 2 ports, a further USB-A 3.2 Gen 2 charging port, a 2.5 Gigabit RJ45 Ethernet port, an SDXC card slot and a 3.5mm headphone/microphone combo jack. It's powered from an AC adapter and works with both Mac and Windows systems.