Connect your Sans Digital SCSI products with high performance 64-bit, 133MHz Ultra320 U4 Dual Channel SCSI Host Bus Adapters. Compatible with MR5S1, MR5S2, AR208S, AR212S, and AR316S products. With this Dual Channel SCSI HBA, you can utilize each channel to increase the performance. For example, 2 of the MR5S1 can connect with 2 different channels and use the operating system RAID function to enhance the performance. AccuRAID series, which is a 2 channel SCSI RAID subsystem, can also benefit by connecting it to a dual channel SCSI HBA for additional performance. This Ultra 320 SCSI card built with LSI chipset that incorporates features Packetized Protocol, Quick Arbitration and Selection (QAS), Skew compensation, Domain Validation, among others to further enhance SCSI performance and reliability.