Simple wiring question for external USB

6 pins for usb is killing me lol! I presume it’s 1, 2 and 3. 1 for power, 4 for ground and 2/3 for signal? Thinking since the buzzer is just that, 5 is an audio signal. Who knows what 6 is. Anyone know for sure? Thanks! Of course this is for the current carrier board supplied from hex.

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