If you need help finding the exact driver download, tell me the , or share the Hardware ID from Device Manager. Share public link

Download the driver and extract the .zip file.

Look for drivers labeled Nuvoton CIR , Serial IO , or Motherboard Utility .

Download the Nuvoton Communications Port driver zipped folder.

To understand what makes a driver “best,” one must first understand its role. Nuvoton’s communications ports typically appear when a user connects a development board (such as those based on the Nuvoton ARM Cortex-M series) or when interfacing with legacy industrial equipment. The driver acts as a translator, converting the raw voltage signals and data streams from the hardware into a virtual COM port that Windows 10 can recognize, typically via USB. Without a correct driver, the device either appears as an “Unknown Device” in Device Manager or fails to communicate with terminal software like PuTTY, Tera Term, or proprietary flash tools such as NuMicro ICP Programming Tool.

Visit your motherboard manufacturer's site (e.g., ASUS Support), enter your motherboard model, and look under the Chipset or Others driver section.

The "best" driver is not always the newest one available online; it is the version that matches your specific hardware architecture and motherboard manufacturer. 1. OEM-Specific Drivers (Highly Recommended)

: Used by developers to bridge USB connections to UART for monitoring I2C, SPI, or CAN data.

Understanding the Nuvoton Role: What is a Communications Port?

Legacy serial devices connected to the motherboard fail to respond. How to Choose the Best Driver for Windows 10

To get the most stable driver, you should look in specific places depending on your computer setup. Method 1: The Manufacturer's Support Page (Recommended)

Here is how to get the absolute best version for your system: 1. Always Check Your Motherboard Manufacturer First

If you still encounter issues, try these advanced troubleshooting steps.

: Bridging USB and Serial signals for developers.