News

What are the common types of power adapter interface?

2022-11-23 Views：37

1. Serial interface
Serial interface, referred to as serial port, also known as COM interface, is an expansion interface using the serial communication protocol. The serial port appeared in

around 1980, the data transmission rate is 115kbps ~ 230kbps, serial port is generally used to connect the mouse and external Modem and the old

Camera and writing board and other devices, some of the current new motherboards have begun to eliminate the interface.

2. Parallel interface
Parallel interface, referred to as the parallel port, also known as the LPT interface, is an expansion interface using parallel communication protocol. The data transfer rate of the parallel port

rate is 8 times faster than the serial port, the standard parallel port data transfer rate of 1Mbps, generally used to connect printers, scanners, etc.. So the parallel port is also known as the print port.

3. USB interface
USB is the abbreviation of the English Universal Serial Bus, the Chinese meaning is "Universal Serial Bus". It is not a new bus standard, but the application of interface technology in the field of PC. USB is the end of 1994 by Intel, Compaq, IBM, Microsoft and many other companies jointly proposed.

All devices that support USB 1.1 can be used directly on the USB 2.0 interface without worrying about compatibility issues, and accessories like USB

There are three types of USB interfaces:

- Type A: generally used for PC
- Type B: generally used for USB devices
- Mini-USB: generally used for digital cameras, digital video cameras, measuring instruments and mobile hard drives, etc.

The current motherboard is generally used to support the USB function of the control chipset, the motherboard is also installed with USB interface socket, and in addition to the backplane socket, the motherboard is also reserved for USB pins, can be connected to the front of the chassis through the cable as the front USB interface to facilitate the use of (note that the wiring to carefully read the motherboard manual and connect according to the diagram, do not connect the wrong device damage).

Power adapter when using a fault how to do, how to solve it? How should I choose a power adapter for my laptop?