Adaptec 2258600-R PCI-Express x8 Serial ATA/300, Serial Attached SCSI 20-Port Serial ATA/SAS RAID Controler

Adaptec RAID 51645 2258600-R SATA/SAS 20-port (16 internal,4 external) w/ 512MB cache memory Controller Card, Single External Connectors: 1 x SFF-8088 mini SAS 300 - Serial Attached SCSI External Internal Connectors: 4 x SFF-8087 mini SAS 300 - Serial Attached SCSI Internal Transfer Rate: Up to 300 MBps Per Port RAID: 0, 1, 1E, 5, 5EE, 6, 10, 50, 60, JBOD. Cache Memory: 512 MB DDR2 Dimensions: 4.60' x 6.60' Operating Systems Supported: PC Unix Solaris Parts: 3 years limited