The Cisco 74-10149-01 RAID SAS 2008M-8I Dual-Port PCI-E Mezzanine Card is a used expansion card designed for servers and workstations. This mezzanine card is used to provide additional SAS/SATA connectivity and RAID functionality to the system. It is equipped with dual SAS 2.0 ports and supports up to eight SAS/SATA drives, offering high-speed data transfer rates of up to 6Gb/s per port. This card is designed to fit into a PCI-E slot on a compatible motherboard, making it a convenient and reliable solution for expanding storage capacity and enhancing data protection.