; USB cable A total of four pins, of which two pins are data cables, two pins are power cables including grounding, red and black two wires are used for charging, and green and white are used for data transmission:
Red line: the positive terminal of the power supply (identified on the wiring: 5V or VCC); White line: negative voltage Data line (identified as: Data- or USB Port -); Green line: positive voltage Data line (identified as: Data or USB Port); Black line: Ground (marked by: GND). ; The general arrangement order is VCC, D-, D, GND, the arrangement is fixed, but there are two directions, the wrong connection of the data line can not identify the usb device at most, the power line must not be connected wrong, it is recommended that you read the motherboard manual or use a multimeter test.
Each USB interface can provide a current of +5V 500MA to the peripheral, if the connection is reversed, the light will burn the usb device, the heavy motherboard will be scrapped. And very quickly, usually within 10 seconds of smoke. ; Extended data; Charger maintenance method;
1. Waterproof and moisture-proof.
As an electronic product, accidentally entering water or being exposed to humid air when not used for a long time will cause varying degrees of corrosion or oxidation of its internal electronic components. ;
2. Anti-fall and anti-shock. The mobile phone charger is actually a fragile part, and the internal components can not withstand beating.
In particular, it is necessary to prevent accidental landing during use.
Do not drop, tap, or vibrate the charger.
Rough handling of the charger will destroy the internal circuit board;
3, anti-virulent chemicals.
Do not use strong chemicals, cleaning agents, or strong detergents to clean the charger.
To remove stains on the surface of the charger, you can scrub cotton with a small amount of anhydrous alcohol. ;
4. Discharge static electricity when cleaning.
Clean the charger and charging port regularly.
When cleaning, use a damp cloth, or an antistatic cloth.
Do not use dry cloth (electrostatic charge). ;
5. Prevent cold and heat.
Do not place the charger in a place where the temperature is too high.
High temperatures can shorten the life of electronic devices, damage chargers, and deform or melt some plastic parts.
Don't store your charger in a cold place either.
When the charger works in a too cold environment, when the internal temperature rises, moisture will be formed in the charger and the circuit board will be destroyed. ; Reference source: Baidu Encyclopedia: Maintenance methods
The role of the four wires in the charger of the mobile phone is
The red and black lines are power cables, and the green and white lines are transmission data cables. The red line is the positive power supply (labeled 5V or VCC), the white line is the negative voltage Data line (labeled Data- or USB Port-), the green line is the positive voltage data line (labeled data or USB Port), and the black line is ground (labeled GND).
Two of them are charging cables and two are data transmission cables. The functions of the four lines of the mobile phone charging cable are as follows: The red line is the charging line, which is used to charge the mobile phone battery; The white line is the data transmission line used to transmit data between the phone and the charger.