It sounds like you're encountering an ACPI FNBT0000 driver entry — likely in Windows Device Manager, Linux kernel messages (dmesg), or a driver list.
A misconfigured BIOS can hide the ACPI device. Acpi Fnbt0000 Driver
Human Interface Device (HID) Support: The "HID" designation means it handles user-interactive components, such as specific hotkeys or chassis buttons, allowing them to communicate directly with the Windows power management system. It sounds like you're encountering an ACPI FNBT0000
Hardware Compatibility: The ACPI Fnbt0000 Driver is designed to work with specific hardware configurations. Its primary function is to interpret ACPI requests from the operating system and translate them into actions on the hardware level, such as adjusting screen brightness or switching display outputs. Linux kernel messages (dmesg)