The CannonLake Thermal Subsystem - A379 Windows driver refers to a software component designed to manage the thermal functions (such as temperature monitoring and fan control) of Intel's Cannon Lake-based processors. Cannon Lake is Intel's 10nm microarchitecture, which powers certain Intel Core processors, and these systems come with a thermal management subsystem to ensure that the CPU doesn't overheat during use.

The "A379" designation in the driver name likely refers to a specific version or variant of the thermal subsystem driver for Cannon Lake CPUs. This driver helps the system operate within safe temperature ranges, prevent overheating, and ensure optimal system performance.