HighPoint RocketStor 6414S 6Gb/s SAS/SATA 4-Bay Storage Tower Enclosure External 4-Bay 6Gb/s SAS/SATA Storage Tower Enclosure Each Hot-Swap Drive Tray supports 2.5"/3.5" SAS/SATA HDD/SSD Designed for use with RocketRAID 4522, RocketRAID 2721, RocketRAID 2711, RocketRAID 644LS Optional Cable (not included): Ext-MS-1MMS - Mini-SAS to Mini-SAS Cable Mac and PC compatible