Description:The Promise Technology FastTrak TX4660 4-Port SAS/SATA 3G PCIe x4 Controller (One Card) offers an economical solution and SPAN storage system with up to eight high-performance SAS or SATA disk drives. In addition to the supported RAID features, the FastTrak TX4660 also supports SAS (Non-RAID) mode for general storage application without RAID.Features: Single Hardware and Software for RAID and Non-RAID Enterprise Proven RAID Engine Supports Both SAS and SATA Drives Sophisticated Array Management Tools The FastTrak TX4660 incorporates many of Promise Technology"s advanced features