1x 32Gb PCIe3.0 host port; 8x SAS/SATA 12Gb 2.5"/ 3.5" drive, tower RAID system. 2x 40Gb Thunderbolt 3 host port; 8* SAS/SATA 12Gb 2.5"/ 3.5" drive, tower RAID system. LSI 3108 processor, 2GB DDRIII Cache. Three Years Warranty. Single Power Supply. Replaceable fan and power module Optional SSD reader