You don’t need to accept the yellow exclamation mark or uncontrolled fans. To secure the :
If you have recently performed a clean installation of Windows 10, upgraded your motherboard, or noticed an unrecognized device in your Device Manager with a yellow exclamation mark, you may have encountered the driver issue. This component is critical for systems that rely on Super I/O chips from Nuvoton—common on motherboards from brands like ASUS, Gigabyte, MSI, and ASRock. nuvoton communications port driver windows 10 best
He saw ACPI\NTC0351 . This was the fingerprint of the Nuvoton Super I/O chip. You don’t need to accept the yellow exclamation
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. He saw ACPI\NTC0351
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.