The PCI to 4 ports SATA Serial ATA RAID Sil3114 Converter Controller Card is an adapter/converter card that allows users to expand their computer's storage capabilities by adding four SATA I ports. Compatible with PCI ports, this controller card is a reliable and efficient solution for those looking to enhance their computer's performance and storage capacity. With its external interfaces and multiple ports, this card provides a versatile and practical option for those in need of expanding their SATA capabilities. Designed in China, this converter card ensures quality and performance for users seeking to upgrade their computer system.