The Intel(R) ICH8 Family USB2 Enhanced Host Controller - 2836 is a driver related to the Intel ICH8 chipset family, which is part of Intel's Southbridge family of chipsets. This specific driver is used to manage the USB (Universal Serial Bus) ports on your system, particularly the USB 2.0 ports. The "Enhanced Host Controller" part of the name indicates that it supports high-speed USB 2.0 data transfer rates (up to 480 Mbps) and is used to allow your computer's operating system to properly interact with USB devices (e.g., flash drives, keyboards, printers, etc.).

The number 2836 refers to a specific model within the ICH8 chipset family, and the "USB2" part refers to support for USB 2.0 (not USB 3.0, which is a later standard).