Avoid sites like driverdr.com or driveridentifier.com . They often bundle malware or outdated, broken drivers. Stick to Prolific’s official site or Microsoft Update Catalog.
provides a trusted legacy driver, as noted on their website for similar Prolific adapters.
If Windows 10 does not automatically recognize the device, follow these steps to install the driver manually: Download and Extract:
Windows 10 will aggressively overwrite your manual changes if it is connected to the internet. Unplug your Ethernet cable or disconnect from your Wi-Fi network before proceeding. Step 3: Uninstall the Current Driver Right-click the and select Device Manager . Expand the Ports (COM & LPT) section. u232 p9 driver windows 10
If your U232 P9 shows VID_10C4, you are in luck – Silicon Labs drivers work flawlessly.
This adapter originally came from the manufacturer MCT (Magic Control Technology Corporation), though many brands, including Belkin, have rebranded MCT's design for their own products (F5U109). It houses a Prolific PL2303 chipset, the heart of the adapter which handles the conversion between USB and serial signals.
Click , navigate to the folder where you extracted the downloaded driver files, and click Next . Windows will locate and install the driver. Step 4: Verify the Installation To confirm that the driver is working properly: Open the Device Manager . Expand the Ports (COM & LPT) section. Avoid sites like driverdr
Below are three proven methods. – it works for about 70% of users. If not, proceed to Method 2.
If you plug the adapter into a different USB port, Windows 10 may assign it a completely new COM port number, breaking your software configuration.
You can temporarily disable driver signature enforcement via Windows 10 Advanced Startup Options to complete the installation. However, finding a newer, digitally signed version is highly recommended for security stability. The COM Port Keeps Changing provides a trusted legacy driver, as noted on
the appropriate driver for Windows 10 from the manufacturer links above. Extract the contents if it is a .zip file.
To download and install the U232 P9 driver on Windows 10, follow these steps:
Select an older driver version from the list (Version 3.3.2.102 or older is highly effective for legacy chips). Click to force downgrade the driver. Preventing Windows Update from Overwriting the Driver
Select and click Save Changes . Advanced COM Port Configuration
The most reliable drivers for this specific chipset come from Magic Control Technology (MCT) , the original manufacturer of the U232-P9 chip. Official MCT Driver: