Perhaps the most crucial piece of information for Windows 10 users comes directly from Nuvoton's official technical documentation. According to Nuvoton's FAQ, the Virtual COM (VCOM) function is supported by genuine Windows XP SP3 or later versions. Most importantly, for Windows 10 specifically, . The necessary drivers are either already present in Windows 10 or are automatically delivered through Windows Update.

Finding the correct for Windows 10 can be challenging. Many users experience yellow exclamation marks in Device Manager or encounter broken serial interfaces after Windows updates.

Even with the "best" driver, issues can arise. Here is your troubleshooting cheat sheet.

When the driver is missing or corrupted, you may lose fan control, your motherboard monitoring software may fail to detect sensors, and you’ll see a "Code 28" or "Code 31" error in Device Manager.

Windows will install the driver, and the device should appear correctly under "Ports (COM & LPT)". Troubleshooting Nuvoton Driver Issues If the driver fails to install or the port does not work:

Therefore, and let Windows 10 install the native driver automatically before you attempt manual installation. That is the easiest and most reliable path.

Go to Device Manager, open the Nuvoton device properties, click the Driver tab, and click Roll Back Driver to restore your preferred version. Best Practices for Maintaining Driver Performance

Note your computer or motherboard model number (e.g., ASUS ROG STRIX Z490 or HP ProBook 450 G7 ). Visit the manufacturer's official support website.

Once you have a stable Nuvoton COM port setup, consider backing up the driver folder ( %SystemRoot%\System32\DriverStore\FileRepository ) or storing the exact INF and driver files in a safe location. This helps you quickly restore functionality if a Windows update ever breaks the driver.