SUPERMICRO AOC-USAS-H8iR PCI Express SATA / SAS 3Gb/s Eight-Port SAS Internal RAID Adapter Internal Connectors: 8 x SAS RAID: RAID 0/1/5/6/10/50/60 Cache Memory: 256MB 667MHz DDR2 on-card cache Operating Systems Supported: Windows 2000/XP/2003, RedHat Enterprise and SUSE Linux Parts: 1 year limited Labor: 3 years limited