Asking people is not as good as the scanner does not recognize the USB port

With the rapid development of computer hardware, the number of peripheral devices is increasing, keyboards, mice, modems, printers, scanners have long been known, digital cameras, MP3 players Then, how many devices, how to access a personal computer? USB is based on this purpose. USB is an interface that standardizes and simplifies the connection of computer peripherals. As a most commonly used tool, the scanner is now installed and used without changing the USB port to the normal interface.

But when many new users use it, they will always be troubled by various problems. For example, some netizens say that their scanner does not recognize the USB port, so ask how to solve the problem that the scanner does not recognize the USB port. Xiaobian is for everyone to answer:

The USB function of the motherboard is not activated

Since the current Windows operating system supports Plug and Play, when the USB scanner is plugged into the computer, If the operating system does not respond, then you first need to check if the USB function in the computer motherboard has been activated; if the function is not activated, the USB scanner can of course not be recognized automatically.

When checking whether the USB function of the motherboard is turned on, you can restart the computer system, then go to the BIOS setup window, find the "PNP and PCI Setup" setting item, and check the <quo ; USB Function” parameter is set to "Enable", if it is, it means that the USB function of the motherboard has been activated, if the "USB Function" parameter is set to "Disable", it means the current motherboard USB The function is not activated. In this case, you must modify the parameter to make it the value of “Enable”, and finally save the BIOS parameters and restart the computer, so that the USB function of the motherboard can be enabled.

Of course, there is an easier way to see if the USB function is enabled directly in the Windows interface without restarting the computer. As long as you open the device manager window of the system, and then check the device list, whether it contains the "USB Root Hub" project, if there is, then double-click the project, in the property settings window shown in Figure 1 Check if the current working status of the device is normal. If it is normal, it indicates that the USB function of the motherboard has been activated.

The USB port is underpowered

Even if the USB function of the computer motherboard has been turned on, there is no guarantee that any USB device plugged into the computer will be correctly recognized by the system. It is because every USB device needs the power supply “Driver” to work normally. Once the motherboard cannot provide enough power to the motherboard, the USB device inserted into the motherboard can not be correctly recognized by the computer.

The lack of power supply on the USB port is mostly seen in older motherboards. It may also occur when multiple USB devices are connected at the same time. To avoid this, the best way is to Insert the scanner into a new computer, or remove all other USB devices that are not used temporarily, and then just plug in the USB scanner. Previous12Next page Total 2 pages