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Heidi Hall

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Aug 2, 2024, 8:23:20 PM8/2/24

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The CP210x USB to UART Bridge Virtual COM Port (VCP) drivers are required for device operation as a Virtual COM Port to facilitate host communication with CP210x products. These devices can also interface to a host using the direct access driver.

The CP210x Manufacturing DLL and Runtime DLL have been updated and must be used with v 6.0 and later of the CP210x Windows VCP Driver. Application Note Software downloads affected are AN144SW.zip, AN205SW.zip and AN223SW.zip. If you are using a 5.x driver and need support you can download Legacy OS Software.

Virtual COM port (VCP) drivers cause the USB device to appear as an additional COM port available to the PC. Application software can access the USB device in the This page contains the VCP drivers currently available for FTDI devices.

Virtual COM port (VCP) drivers cause the USB device to appear as an additional COM port available to the PC. Application software can access the USB device in the same way as it would access a standard COM port.

If a custom vendor ID and/or product ID or description string are used, it is the responsibility of the product manufacturer to maintain any changes and subsequent WHCK re-certification as a result of making these changes.

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***Windows 10 and Windows 11 only. Universal Windows Drivers enable developers to create a single driver package that runs across multiple different device types, from embedded systems to tablets and desktop PCs.

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In Windows 10, USB driver has been reworked and there is no need for Virtual COM driver to be installed. It works natively when you plug-in a device. But according to Microsoft documentation, you need to set device USB class and subclass ID to 0x2 (see

Could you please give me all the steps to do to be able to connect the Arduino to a valid Com Port please ? it would be perfect, because even if i changes this values and reflach the micro-controller not sure that the Arduino IDE will detect the Com Port given that its not listed on the Device Manager, am i correct ?

Please consider that i am not an expert, i search in google about setting the bDeviceClass ans bDeviceSubClass in cubemx, and didn't find some thing, so please give us all the steps to have a valid working COM port.

Ok i think i got my real problem, i was trying to get the Virtual Com Port Working throw the St-Link v2, but when i plug another Usb cable usb to the USB of the stm32c8t6 borad the Virtual Com Port apears !

I have a few handheld radios that I need to update the frequencies and when I connect to the USB, it fails to connect. In device manager and Ports it says - "Please install corresponding PL2303 driver to support Windows 11 and further OS"

Hello! You've posted your question in the Tech Community Discussion space, which is intended for discussion around the Tech Community website itself, not product questions. I'm moving your question to the Windows 11 space - please post Windows 11 questions here in the future.

Windows 11 update loaded Prolific PL2303 driver 3.8.40.0 and when I go to device manager it says "Please install corresponding PL2303 driver to support Windows 11 and further OS" This driver does not even attempt to communicate with my X10 CM11 hooked to my serial port. I had to go to Prolific website and load their current driver 3.6.81.357. (uninstall driver first) Serial to X10 device now working fine. Don't install Windows update for Prolific or it will change it back.

I recently got a new Windows 10 machine, and I got my Guitar Port running using the latest drivers and software. POD Farm 2 was the only choice in software available, which is what I installed, and it seemed to work great... for a few days. Now, I'm getting an error saying that POD Farm 2 is not authorized, and it appears I have to purchase it for $100. Honestly, WTF! Do I really have to spend $100 to make my Guitar Port run on Windows 10?