What Can a USB-C Port Actually Do?

USB-C is a reversible physical connector.

A port may implement USB 2.0 data, faster USB, USB4, charging, DisplayPort Alt Mode, or a subset. Inspect the device manual and symbols.

Source, cable, and sink negotiate a supported level.

A high-wattage charger cannot force unsupported power into a device, but the cable must also carry the negotiated current and power class. Verify all three components.

Host, port, cable, dock, and display must share a mode.

A USB-C-shaped port without DisplayPort Alt Mode or another supported display protocol cannot output video merely by changing adapters.

Avoid names that describe only the connector.

Write down required data rate, charging wattage, display resolution and refresh rate, then select documented and certified components that meet every link.