![]() There is no need to install anything, simply run the chip check program. Since it is not always possible to see the chip and read the type number, you can use the Prolific utility to determine the version.Īfter downloading the ZIP file, open it and run the EXE file inside it (e.g. So it is important to know which variation of the PL2303 chip is in use on your system. With chip manufacturers, it is sometimes type indicators.įor Windows, Prolific also specifies which types are no longer supported on Windows 11. In most cases, updates to hardware are indicated with revision numbers. Like with many hardware vendors, not all variations of their products are supported on all platforms. The result in both cases is that Windows 11 cannot communicate with the device that is connected through the USB to serial cable and any programs trying to use it will not find the device. ![]() The error code for the device will be “ The device cannot start (Code 10)”. If the driver for the Prolific PL 2303 device is not installed in Windows 11, you can either get an error message like “ Please install corresponding PL2303 driver to support Windows 11 and further OS”, or the device will show with an error in the Device Manager (typically with a yellow exclamation mark). What if Windows does not have a Prolific PL2303 driver? Another popular solution for USB to RS232 is the TrippLite USA19HS or Keyspan USA-19hs. For Windows drivers, check their support site. Their chips in the CP210x series also offer USB to UART solutions (the CP2102 is often used). Since the cables are available for USB Type-A ports as well as USB Type-C ports, a solution is available for most Windows 11-based systems.Īn alternative solution is available from Silicon Labs. If your PC does not have a serial port, many of these devices can still work with a Windows 11-based computer using a USB-to-serial cable. Audio equipment (radios, amplifiers, mixers).In this case, the error appeared on a Linux when trying to upload code due to the drivers not being installed and the root permissions.Some examples of the types of products that use a serial connection are: language:bashĪvrdude: ser_open(): can't open device "/dev/ttyUSB0": No such file or directory You may receive an avrdude: ser_open(): can't open device error similar to the output shown below. If you installed the drivers for the CH340 on your computer but have issues connecting via serial terminal or uploading code using the Arduino IDE, there may be an issue with your user settings preventing you from using the CH340. COM Port Not Available Windows, Mac, and Linux ![]() ![]() Users seem to be able to eventually get the board recognized by a combination of giving the computer time to finish the install ( close to 20 min), plugging the board back in multiple times, reinstalling the drivers, and/or resetting the computer multiple times ( repeat both steps). Others have had issues where the installation process hangs.īased on the customer experiences, this might be specific to the manufacturer and are usually isolated cases. However, the board cannot be accessed on the Arduino IDE. We have had a few reports on Windows 10 where the driver will automatically install and the board will show up under a new COM port as USB-Serial CH340, but with a different device name. Troubleshooting COM Port is Not Showing Up as CH340 Windows
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