Adaptec ASR-6805 512MB SATA/mini-SAS 6GB/S PCI-Express 2.0x8 RAID Cache Memory Controller Card No Bracket No Module 2271200-R.Model Number: ASR-6805Adaptec Part Number: 2271200-RSpecifications:Type: SATA / SASInternal Connectors: 2 x SFF-8087 mini-SASInterface: PCI-Express 2.0Transfer Rate: Up to 6Gb/sCache Memory: 512MB of DDR2 667 MHzRAID: RAID 0, 1, 1E, 5, 5EE, 6, 10, 50, 60 and JBODOperating Systems Supported:- Windows 7- Windows Server 2008/2008 R2- Windows Vista- VMware ESX Classic 4.x (vsphere) - Red Hat Enterprise Linux (RHEL)- SUSE Linux Enterprise Server (SLES)- Sun Solaris 10 x86- FreeBSD- Debian Linux- Ubuntu Linux- Fedora Linux