4 independent SATA 3.0 ports with 6Gbps maximum transfer speed; Adopts Marvell 88SE9215 stable chip, non-RAID working mode; Supports system boot, works as primary storage controller for desktops; PCIe 3.0 x1 interface, backward compatible with PCIe 2.0 / 1.0 slots; Black appearance, compatible with all 2.5 / 3.5 inch HDD and SSD