If you downloaded a .exe or .msi file from your manufacturer, use this method.
Completely uninstall the driver. Right-click the device in Device Manager, select Uninstall Device , and check Delete the driver software for this device . Restart the PC and try a different driver version. Missing COM Port Number
Before you download any third‑party driver, there is a you must be aware of. According to Nuvoton’s official forum, for Windows 10 no additional driver installation is required for Nu-Link-Me devices with the VCOM function, as the operating system already includes built‑in drivers:
The Nuvoton serial interface uses standard Advanced Configuration and Power Interface (ACPI) identifiers. The driver targets the following hardware IDs: (Standard COM1/COM2 Port) ACPI\PNP0500 (Legacy COM Port variants)
If the device properties show Error Code 19 (“Configuration information is incomplete or damaged”), the Windows registry may be corrupted for that COM port.
For users who need to download the driver manually or want the absolute latest version available, the Microsoft Update Catalog is an excellent resource. Microsoft's official driver catalog hosts a wide range of WHQL-certified drivers for various hardware.
Nuvoton Technology manufactures Microcontrollers (MCUs) and Super I/O chips used by major computer brands like ASUS, HP, Dell, and Lenovo.