The Silicon Image SiI 3114 SATALink Controller is a SATA (Serial ATA) controller chip that is typically used to add extra Serial ATA ports to a motherboard or a PCI/PCIe expansion card. It is commonly found on older motherboards or add-in cards and is used to connect Serial ATA hard drives and other devices to your computer.

The SiI 3114 chip supports RAID (Redundant Array of Independent Disks) and non-RAID configurations, providing you with additional storage options. To ensure that the controller works properly with your operating system, you need the correct Windows driver.