The 3ware 9550SX PCI-X to Serial ATA II RAID controller delivers over 380MB/sec RAID 5 writes and exceeds 800MB/sec RAID 5 reads, making it 200% faster than the industry leading 3ware 9500S RAID controller. 7th generation StorSwitch non-blocking switch fabric technology and sophisticated SATA II features including 3Gbps, Native Command Queuing, and hardware support for Port Multiplier drive this unmatched performance.