LSI 320X2128 64-bit, 133MHz PCI-X SCSI Controller Card MegaRAID 320-2X (532) External Connectors: 2x 68 pin VHDCI Internal Connectors: 2 x P68 connectors (HD) Transfer Rate: Up to 640 MB/sec RAID: RAID 0/1/5/10/50 Cache Memory: 128MB Dimensions: 6.9 x 4.2 Operating Systems Supported: Microsoft Windows XP/2000/2003 Red Hat Linux Novell NetWare Red Hat Advanced Server SCO UNIXWare SCO OpenServer Parts: 3 years limited