USB-C PD allows you to negotiate 5V, 9V, 12V, 15V, or 20V over the standard USB-C connector. The colors used on the ZY12PDN board for these are:
Red: 5V
Yellow: 9V
Green: 12V
Teal: 15V
Blue: 20V
Purple: Highest voltage possible
White: Cycle through all the possible voltages changing every few seconds.
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