If you cannot disable the device, give it a harmless driver.
: The vendor prefix assigned to National Semiconductor , the original manufacturer of the integrated circuit chip.
While it is frequently flagged as an "Unknown Device" in modern operating systems, it represents an older era of wireless data exchange that preceded the widespread adoption of Bluetooth and Wi-Fi. Hardware Identification and Origin acpi nsc6001
Drivers for this hardware are generally native to Windows XP and Windows 2000. On these systems, it may appear as the "NSC PC8739x Infrared Controller" .
Microsoft completely removed the native IrDA driver stack starting with Windows 10 (specifically from build 1511 onward). As a result, when modern versions of Windows scan the motherboard's ACPI tables, the OS detects the physical National Semiconductor chip but lacks a built-in driver to initialize it. The OS cannot decipher its purpose, defaulting its state to an unknown device. Methods to Fix the ACPI\NSC6001 Driver Issue If you cannot disable the device, give it a harmless driver
There are three main methods to resolve the missing driver issue.
Since this is legacy hardware, the most reliable drivers are often hosted on manufacturer support pages or reputable driver repositories: Hardware Identification and Origin Drivers for this hardware
Connecting PDAs (like Palm Pilots) or early mobile phones to a laptop to sync contacts and calendars.
This device is an controller used for wireless data exchange between peripherals like mobile phones, PDAs, and printers. Manufacturer: National Semiconductor. Common Chips: PC87108, PC87308, or PC87338.