The Intel(R) 82801EB SMBus Controller - 24D3 is a hardware component found in Intel chipset-based motherboards. It is part of the System Management Bus (SMBus), a communication protocol used to manage system components such as power management devices, thermal sensors, and other low-speed devices on the motherboard. The driver for the SMBus controller allows the operating system to communicate with these system components properly.

In simpler terms, this driver is responsible for enabling Windows to interact with certain hardware on your system, especially for power and thermal management. Without this driver, some features related to power management or hardware monitoring may not work as expected.