HighPoint RocketRAID 2744 16-Port PCI-Express 2.0 x16 SAS/SATA RAID Controller 6Gb/s (600MB/s) data transfer rate Major OS support includes Windows, Linux, Free BSD and Mac OS X 10.7x Lion (only for RocketRAID 2722 and 2744) PCI-Express 2.0 x16 4 External Mini-SAS ports RAID level 0, 1, 5, 10, 50 and JBOD Full Height Certified Cable: HighPoint External Mini-SAS to 4x eSATA (HighPoint Ext-MS-1MEJ) Certified Cable: HighPoint External Mini-SAS to External Mini-SAS Cable (HighPoint Ext-MS-1MMS)