Knowledge of onboard USB pins-careful installation

There are more and more USB devices, such as USB mouse, keyboard, card reader, and USB camera. Therefore, the USB interface after the motherboard panel is insufficient. In addition, if too many USB devices are used in the motherboard I/O, it is likely to cause a USB device conflict or instability. Therefore, almost all mainstream boards provide built-in USB extended interfaces. However, it is difficult for users to connect to the built-in USB Extended Interface. First, we need to prepare a USB expansion cable. We can purchase a dedicated USB expansion board from the computer market (some boards such as gigabyte will be attached with a USB expansion board). The chassis with a front USB interface also provides a expansion line.

No matter what measures are used to expand the built-in USB interface of the motherboard, the USB cable must be correctly connected. Most of the current mainboards provide more than one set of USB expansion pins for your convenience. However, because the pins on the motherboard are different, once an error is inserted, it is easy to burn out USB devices. This is common for many users. Therefore, we need to know how to connect USB extended connections.

There are no doubt that there are currently six USB Plug-In methods available on the motherboard. Two plug-in pins are available for the USB extension interface on the motherboard. The number of plug-in pins varies depending on the motherboard, the specific differences are shown in Figure 1. You can avoid connection errors as long as you carefully check the motherboard USB extension pin type. In addition, there are two groups of corresponding connections for the USB extended connections, each of which has four lines: red, white, green, and black. Please note the red line of the USB device connection:

They correspond to the 5 V positive pole, 5 V negative pole, two data transmission lines and the ground wire of the motherboard USB pin respectively. If the USB expansion board is used, you only need to confirm the positive and negative ends, if the USB cable has eight separate connections, you need to arrange the connections in two groups. For example, if the first row of 5 V + is connected to the red line on the USB cable, a needle on the opposite side is also connected to the red line, and so on! Although there are 6 types of on-board USB plug-ins, You Can Securely connect to any USB device without making a wrong + 5 V position based on the six definition diagrams.