MINI USB, also known as mini USB, is a small USB interface, its indicators are the same as standard USB, but an ID pin (used to distinguish whether the device is a host or a peripheral) is added to support OTG (On The Go, this function It allows data transfer between devices without a host. Due to its relatively small size, the Mini USB interface is commonly used on some small devices, such as MP3, MP4, radio, etc. Different from other USB female connectors, there are two ways to connect the MINI USB female connector, namely the USB type A interface connection method and the USB type B interface connection method.
MINI USB female socket B type wiring method:
1. Red wire: The mark on the positive terminal of the power supply is: VCC or +5V.
2. White line: The negative voltage data line is marked as: Data-.
3. Green line: The positive voltage data line is marked as: Data+.
4. Empty end: ID
5. Black wire: The grounding mark is: GND.
MINI USB female socket A type wiring method
1. Red wire: the positive pole of the power supply (the marking on the wiring is: +5V or VCC)
2. White line: negative voltage data line (identified as: Data- or USB Port -)
3. Green line: positive voltage data line (identified as: Data+ or USB Port+)
4. Black wire: ground (identified as: GROUND or GND).
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