The main USB-C port is Thunderbolt 3 compatible and is used to connect the hub directly to the laptop.
The secondary USB-C port is for pass through charging only and cannot deliver data or video.
Arc Hub comes with 2 x USB 3.0 Ports (Up to 640mbps/5gbps or 320mbps/2.5gbps when both USB ports are in use).
Arc Hub comes with 1 x SD Card Slot (UHS-ii compatible). Please note that Arc Hub will not attain UHS-ii speeds but will still be faster than UHS-i.
Arc Hub comes with 1 x HDMI Port 1.4. Capable resolutions are 1080p@60hz, 2560 x 1440 @ 60hz, 3840×2160@30hz.
Arc Hub comes with 1 x Mini Display Port 1.2. Capable resolutions are all HiDPI resolutions, 1080p@60hz, 2560 x 1440 @ 60hz, 3840×2160@30hz.