The USB port of the printer generally refers to the USB B-type port. This kind of interface is roughly square and highly recognizable, and is generally produced for printer applications. Many people have encountered the problem of printer USB "unrecognized". If it can be used normally all the time, it suddenly prompts that the USB cannot be recognized. USB cannot be recognized may be caused by a variety of reasons, according to different reasons, there are different ways to deal with it.
The usb interface is dirty: In this case, you only need to wipe and clean the usb port with alcohol or a special cleaning agent when the power is off.
The usb port is damaged: in this case, cleaning the port is no longer effective, you need to use a tool to replace the usb port
The usb main control chip is damaged: simply replacing the usb port cannot solve the damage of the main control chip. It is necessary to replace the main control, but more often it is to directly replace the main control board.
When there is a problem with a USB device, in addition to finding a solution based on the actual error message, you should also carefully check the specific brand, model, and manufacturer of the USB device. Include this information in the search results to make it easier to find the corresponding solution. method.
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