Bus Type: PCIe x 8 (8 lane) External Connectors: 4 x e SATA Female Supports RAID levels 0, 1, 0+1, 5 & JBODPort Multiplier & NCQ (Native Command Queuing) support Supports SATA II data transfer rate up to 3 Gbit/s per channel Supports four independent SATA II channels Integrated cooling fan On board jumper to enable or disable the on board SATA BIOSHot Pluggable drive support Silicon image chipset Sil 3124 Software Compatibility: Windows 2000/XP/ Vista/ Windows 7/ Server 2003 & Linux, Supports ' Non booting' drivers up to Mac OS v.10.62 Year warranty