Connector Pin-out
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The assignment of each pin in a connector to a specific function such as data, power, ground, or control.
USB-C has 24 pins carrying power, USB data, high-speed lanes, sideband signals, and configuration channel (CC). HDMI Type A has 19 pins. Understanding pin-outs helps when diagnosing why a cable works for charging but not data — budget cables often leave data pins unwired to cut costs.