Rosewill RC-211 Silicon Image 2 port SATA II PCI Express Host Controller Card RAID 0/1/0+1/5 JBOD The revolutionary Serial ATA 3.0 Gb/s interface provides scalable performance for storage devices. SATA technology enables easy-to-install, high-performance and low-power hard drives. The PCI Express x1 interface provides 2.5 Gb/s throughput and full-duplex operation for enhanced performance. RAID 5 requires the use of Port Multiplier capability and 3rd Drive