SATA III 2 Internal Ports 6Gbps PCI-e Express Controller Adapter Card Alow dual SATA 3 HDD to work in PCI express slot of Desktop Supports Communication Speeds of 6.0Gbps, 3.0Gbps, and 1.5Gbps Supports 2 Ports Serial ATA Chipset Marwell 88SE9170 System requirement:Windows7(32 / 64 bit),windows 2000/XP/Server2003/Vista