Windows Update pushed a generic serial driver over your custom one.

Adopting the following best practices will keep your Nuvoton COM port connections reliable over the long term:

Yes. Drivers for the Nuvoton chip are binary-compatible between Windows 10 and 11. In fact, the best driver for Windows 10 often comes from a Windows 11 package.

Even if you no longer have the original disc, enter your motherboard’s exact model number (e.g., ASUS PRIME B450-PLUS ) on the manufacturer’s website.

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.

: For physical development tools (like Nu-Link-Me), ensure physical switches on the board (e.g., VCOM Switch No. 1 and 2) are set to ON for the port to be recognized by Windows. Troubleshooting

For the experience with the Nuvoton Communications Port driver on Windows 10:

Start by visiting your motherboard’s support page. If that fails, fall back to Nuvoton’s official reference drivers. Avoid third-party driver updaters at all costs. With the correct driver installed, your Nuvoton Communications Port will function reliably, whether you’re programming a microcontroller, controlling legacy industrial equipment, or simply using hardware monitoring tools.

A: Possibly, but it’s not recommended. Windows 8.1 drivers have a better chance of working. Always prefer Windows 10-specific drivers.

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.