PCIe SATA 3 Expansion Card Adapter NOT support PCIe x1 slot, please check your MB before bid 6 Port SATA 3.0 PCI-e Card Converter Adapter Hardware required: PCI-e x4 or above slot. (NOT support PCIe x1 slot, please note!) ASM1166 Chipset, fully compliant with SATA 3.0 specifications and backward compatible with SATA I/II (1.5/3.0Gbps) Support SATA 6G, AHCI, SPAN Compliant with PCI Express 3.0 standards Port Multiplier Command-based switching supported