USB is a commonly used pc interface. It has only 4 wires, two power supplies and two signals, as shown in the figure below. Therefore, the signals are transmitted serially, and the usb interface is also called a serial port. The speed of usb2.0 can reach 480Mbps . It can meet various industrial and civil needs. The output voltage and current of the USB interface are: +5V 500mA There is actually an error, and the maximum cannot exceed +/-0.2V, which is 4.8-5.2V. The four wires of the usb interface are generally allocated as follows. It should be noted that the positive and negative poles should not be reversed, otherwise the south bridge chip of the usb device or computer will be burned: black wire: gnd red wire: vcc green wire :data+ white line:data-

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USB interface definition color

The general arrangement is: red, white, green, and black from left to right

Definition:

Red-USB power supply: marked with the words -VCC, Power, 5V, 5VSB

Green-USB data cable: (positive)-DATA+, USBD+, PD+, USBDT+

White-USB data cable: (negative)-DATA-, USBD-, PD-, USBDT+

Black-ground wire: GND, Ground

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About MINIUSB

Generally, MINIUSB has 5 cores:

1——VCC

2——D-

3——D+

4——ID

5——GND