areca ARC-1320 series ARC-1320ix-16 PCI-Express 2.0 x8 Low Profile SATA / SAS 24 Ports Host Adapter External Connectors: 2 x SFF-8088 mini-SAS Internal Connectors: 4 x SFF-8087 mini-SAS Transfer Rate: Up to 6Gb/s Dimensions: 64(H) x 214(L) mm Operating Systems Supported: Windows 8, server 2012, 7, 2008, Vista, 2003 and XP Linux (Red Hat and SuSE) FreeBSD Solaris 10/11 x86/x86-64 illumos x86/x86-64 Mac OS 10.4.x/10.5.x/10.6.x/10.7.x/10.8.x