Obtain a legacy package from an archive or a trusted source like the DriverIdentifier Database for Acer Extensa .

If you are seeing this hardware ID, you are likely maintaining a legacy machine or running a refurbished laptop. The issue stems from structural changes in modern operating systems:

This issue is common on older laptops, particularly (5220, 5620, 4620, 7620) and some IBM/Lenovo ThinkPad models. This article will explain exactly what the ACPI\NSC6001 device is, why it shows up as unknown, and provide a step-by-step guide to resolving the driver issue. What is ACPI\NSC6001?

: When a system boots, the ACPI BIOS exposes the device tree to the OS. If the OS sees NSC6001 , it searches its driver database for a matching "Fast Infrared Port" driver.

Finding an "Unknown Device" with the hardware ID in your Windows Device Manager usually points to a missing driver for a legacy IrDA Fast Infrared Port . While infrared technology is less common today, this specific ACPI identifier is frequently seen on older laptops from manufacturers like Acer (specifically the Extensa and TravelMate series) and HP . What is ACPI\NSC6001?

If the Microsoft Catalog file fails to install, use the original laptop manufacturer packages. IrDA Fast Infrared Port Driver for Acer - Extensa 5620

You can resolve this error using three primary methods depending on whether you actually need to use the infrared port. Method 1: Download from the Microsoft Update Catalog

: The specific device model ID designated for their Fast Infrared (FIR) communication chip .

drivers/pnp/idlist.h - pub/scm/linux/kernel/git/tglx/history

Look for any driver mentioning National Semiconductor , Lenovo , or Chipset . Check the box next to it and click . Method 3: Manually Update via Device Manager

. On Windows 10 or later, you may first need to enable it via

However, the technology had critical limitations:

The table below lists the common systems that included this ACPI device:

The ACPI (Advanced Configuration and Power Interface) NSC6001 is a specific implementation of the ACPI standard for power management and configuration in computer systems. This essay aims to provide a detailed analysis of the ACPI NSC6001, its features, functionality, and significance in modern computing.

The hardware ID (often appearing as *NSC6001 ) refers specifically to a legacy IrDA Fast Infrared Port manufactured by National Semiconductor .

When users upgrade these machines to newer operating systems like Windows 7, 8, or 10, the system often fails to automatically identify the infrared port because modern hardware has largely replaced infrared with Bluetooth and Wi-Fi. How to Resolve the Issue