The Nuvoton CIR (Consumer Infrared) Transceiver is a hardware component used in many modern laptops, desktops, and motherboards to enable communication between the computer and infrared (IR) devices such as remote controls, wireless keyboards, and other IR-enabled peripherals. CIR stands for "Consumer Infrared," which is a standard used for short-range wireless communication, typically in a home entertainment or personal computing context.

The Nuvoton CIR Transceiver specifically is a type of IR receiver and transceiver that allows a system to interact with IR-based devices (e.g., TV remote controls, media player remotes, etc.). It communicates with the system via the Universal Serial Bus (USB) or serial communication. In some cases, this IR receiver is built into the motherboard or integrated into specific peripherals like USB dongles.