SY-SA3512-2R SATA 2x Internal port with Software RAID SIL3512 Chipset PCI Specification Revision 2.2 compliant Silicon Image SIL 3512 host controller chip Support 66 Mhz PCI with 32-bit data Compliant with programming interface for Bus Master IDE Controller, Rev1.0 Support programmable and EEPROM, FLASH & EPROM loadable PCI class mode