In the process of purchasing data line there are a few points that we pay attention to, the following details.
1. Interface type
Let's start with the USB interface type. Different types determine different shapes. From a 3-in-1 data cable can understand the common laptop and mobile phone interface.
① Micro-B interface, commonly known as Android interface. Commonly used in Android phones and other electronic products, some small home appliances also use the interface
② Lightning interface, Chinese name lightning interface. Commonly known as Apple interface. Exclusive connector specifications made by Apple for use in Apple electronic products
③ USB Type-C interface, commonly known as C port. A new generation of connectors for Android phones and other gadgets
④ USB Type-A port, commonly known as USB port. Used to connect to a desktop or laptop computer
The interface is divided into sockets and plugs, also known as female head and male head
2. USB specification
Having introduced the four common interfaces, here are the USB specifications and standards. Interfaces and specifications, they are not the same thing. The interface type determines the physical form, and the USB specification specifies the transfer speed.
Common specifications are USB2.0, USB3.0, USB3.1, and USB3.2. However, these are not the official names now, because the USB-IF(USB Standardization Organization in the United States) has changed the USB specification three times, so the naming is confused and the old and new names are mixed
USB 3.0 equals USB 3.0 GEN1 equals USB 3.2 Gen1
USB 3.1 is equal to USB 3.1 GEN2 is equal to USB 3.2 Gen2
3. Output power
The charger power is 5W, 10W, 18W, 20W, 27W, 33W, 40W, 66W, 100W and so on
Power calculation formula: Power (W) = voltage (V) x current (A)
At present, various merchants use 6A or 5A as their selling point
