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by yellowapple 4032 days ago
Many USB 3.0 ports have blue inner connectors to indicate that they're 3.0 ports, and some USB ports will have yellow connectors instead to indicate a variety of things (from better charging rate to supplying power even when the host device is powered off). I think the logical extension of this would be resistor-style color code bands to indicate different sets of functionality (yellow for Thunderbolt, red for charging, etc.).