USB is A widely used external bus standard in the field of PC, used To regulate the connection and communication between computers and external devices, USB A Male To Open Cable interface support device plug and play and hot swap function. With the rapid development of computer hardware, the application of USB increases the speed of data transmission between external devices. The improvement of speed for users means that users can use more efficient external devices.
USB according to different interfaces and data lines, support equipment: mouse, keyboard, printer, scanner, camera, flash disk, MP3 player, mobile phone, digital camera, mobile hard disk, external optical floppy drive, USB card and other electronic products.
USB A Male To Open Cable - a total of four pins, of which two pins are connected to the data function, the other two pins are charged power cord including ground.
1, the role of the red line: positive power supply pole (marked :+5V or VCC on the wiring)2, the role of the white line: negative voltage Data line (marked :Data- or USB Port-)3, the role of the green line: positive voltage data line (marked: data + or USB Port+)4, the role of the black line: grounding (marked :GND)
In addition, USB A Male To Open Cable has the following characteristics:
1. Hot-swappable. That is, when users use external devices, they do not need to shut down and start again, but directly plug in the USB when the computer is working.
2, easy to carry. Most USB devices are "small, light and thin", which is convenient for users to carry around a large amount of data. Of course USB hard drive is the first choice.
3. Unified standards. We are common IDE interface hard disk, serial mouse and keyboard, parallel port printer scanner, but after the USB, these application peripherals can all use the same standard and personal computer connection, then there is a USB hard disk, USB mouse USB printer and so on.
4. Multiple devices can be connected. USB often has multiple ports on personal computers and can be connected to several devices at the same time, if connected to a USB with four ports.
