If the U232-P9 continues to fail:

Save the driver files to a folder on your PC and extract them. Open Device Manager: Right-click the button and select Device Manager Locate Device: Look for "Unknown Device" or "USB-Serial Controller" under Other devices Ports (COM & LPT) Update Driver: Right-click the device and choose Update Driver Browse my computer for drivers

Zadig can force a generic Windows serial driver (usbser.sys) for stubborn adapters.

Related search suggestions (terms you can try): U232 P9 driver, VID_XXXX PID_XXXX, FT232R Windows 10 driver.

: If you are using this specific Belkin model, it actually uses the U232-P9 driver architecture.