• PCI Express PCIe x1 controller card to add 4 internal SATA III ports to a desktop PC. • Compatible with SATA 3, SATA 2, and SATA 1, allowing you to connect 1 to 4 SATA III peripherals independently. • Maximum theoretical transfer rate of 600 MB/s (6 GB bandwidth) with SATA 3 hard drives. • Includes drivers for Windows 2000, XP, Vista, 7, 8, 10, 11 (32/64 bit) and Linux Kernel 2.6.19 or higher. • PCI Express 1x port, compatible with PCIe 1x, 2x, 4x, 8x, and 16x slots. • Supports hard drives and optical drives, with no hard drive capacity limit. • Four independent SATA III ports, supports NCQ (32 commands per port) and port multiplier devices. • Compatible with AHCI and FIS port multiplier devices. • Immediate installation (plug and play). • Includes two brackets for high and low profile cases. • The Marvell 88SE9215 chipset does not support RAID array setup.