Sans Digital TowerRAID TR4X+B 4-Bay SAS/SATA JBOD PCI RAID External Hard Drive Enclosure (Black) Four 3.5-inch SAS or SATA hard disk drives to SFF-8088 Mini-SAS interface. Accesses four hard drives using only one cable. Supports JBOD, spanning, RAID 0, 1, 1+0, 5, 6 with spare via RAID controller. Supports Areca, LSI, Intel, 3ware, Adaptec, HighPoint SAS or SATA RAID controllers. Cable-less backplane design supporting hot-swappable SATA and SAS hard drives. Supports plug & play for easy installation. Compact enclosure with dust-free cover. Supports PC, MAC and Linux. (Please check HBA or RAID controller driver compatibility.)