The is a series of integrated graphics and system controllers used in older Intel-based laptops and desktops. This chipset includes the graphics controller, which provides graphics rendering, display output, and video acceleration, as well as the and other related components. It also features a PCI Express Root Port which connects the chipset to the rest of the system via PCIe lanes.

The drivers you're referring to are for the following components:

These drivers are necessary for proper functionality of graphics, display, and PCI Express devices like GPUs or other expansion cards. Installing the correct drivers ensures that your system can take full advantage of these components for video display, system performance, and hardware connectivity.