![]() ![]() If you can see the CH340 driver on Device Manager, mBlock 5 is supported to identity the serial port properly. Open Device Manager and check whether the CH340 driver is installed.The system may instruct you to restart your computer during installation. (Ensure that the USB interface of the computer works properly). Ensure that you have used a USB cable to connect your device to the computer and turned on the device.What can I do?Ĭause: The serial port driver is not successfully installed. mBlock 5 can’t identify the serial port after a device is connected to the computer. The information COM3 included in the parentheses is the serial port.Ģ. Check the serial port of USB-SERIAL CH340. (2) Choose Device Manager in the window that appears. (1) Right-click My Computer (or Computer) and choose Manage. We can view the serial port in the device manager by performing the following steps: On Windows, when a hardware device is inserted into the computer, th system automatically identify the device and include it in the device manager. How to check the serial port of a device on Windows? ![]()
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