6-Port SATA III 6Gbps PCI Express 3.0 x4 expansion card - SATA adapter converter card features ASM1166 controller for 6x SATA 6Gbps ports w/combined bandwidth of 16Gbps - No built-in RAD for improved motherboard compatibility Full/low-profile brackets - PCIe 3.0 SATA 3.2 AHCI 1.4 ATA & ATAPI for HDD, SSD, ODD support - Windows (7+) macOS (10.10+) Linux (2.6.32+) - Supports storage management systems like Storage Spaces (Microsoft)/RAID Assistant (macOS)/mdraid/mdadm (Linux)