Syba's 2 Port SATA 6Gb/s PCI-e x1 is a high performance SATA host adapter designed to add two internal Serial ATA 6Gb/s channels to your PCI Express-equipped computer for additional hard disk drive connections. It supports SATA hard disk drives up to 4TB, ATA/ATAPI-7 specification as well as port multiplier. Plus, the SATA controller card offers an effective hardware RAID solution, with native RAID (0, 1, SPAN) support. Includes both a full and low profile/half-height bracket for installation into any size of desktop computer. - ASMedia ASM1061 chipset - Supports 2 ports Serial ATA PHY, 1.5Gbps, 3.0Gbps and 6.0Gbps seed negotiation - Supports AHCI and IDE programming interface - Supports Native Command Queue (NCQ) - Supports Port Multiplier command based switching - Embedded hardware RAID engine - RAID mode changeable, controlled via the setting by two GPIOs or GUI utility - Supports S.M.A.R.T feature - Supports automatic rebuild