The 3ware 9550SX PCI-X to SATA II RAID controller delivers over 800MB/sec RAID 5 reads and exceeds 380MB/sec RAID 5 writes, 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 3 Gbps transfer speed, Native Command Queuing (NCQ), and Port Multiplier support drive this unmatched performance.Combined with an advanced RAID management feature set that includes web-based, command-based, and API software components, the 9550SX is the most compelling RAID solution available.