ADAC 493 is a dual channel PCI RAID (redundant array of independent disks) controller. Intels i960RN CPU, PCI Hot Plug support, 64-bit PCI bus, dual Ultra 160 SCSI channels, and high-performance drivers increase system throughput. These features help make the ADAC 493 one of the most powerful yet affordable entry-level RAID controllers available, while providing superior performance, data protection and fault tolerance.