The Intel(R) 8 Series/C220 Series 4-Port Serial ATA Storage Controller - 8C00 is a driver that facilitates communication between your Windows operating system and an Intel chipset-based SATA (Serial ATA) controller on your motherboard. This controller is typically found in Intel-based systems with 8 Series or C220 Series chipsets, which manage the connection between your computer's motherboard and storage devices, such as hard drives (HDDs) and solid-state drives (SSDs) connected via SATA ports.

The driver ensures that Windows can properly interact with the storage controller, enabling the operating system to recognize connected drives, manage data transfer, and configure RAID (Redundant Array of Independent Disks) if applicable.