The Aleratec AHCI SATA III 6Gbps 2-Port controller card adds 1 internal SATA port and 1 external SATA (eSATA) port to your computer. It is great for users who want to add either internal or external high-speed storage to their computers. It works in any available PCI Express (PCIe) slot and supports data transfer rates up to 6.0 Gbps. This 2 port SATA 3 host adapter supports Harware RAID0, Hardware RAID1 and non-RAID for hard disk drives (HDD) and solid state drives (SSD) and non-RAID for CD, DVD, and Blu-ray drives. In addition it also supports ATA and ATAPI commands Native Command Queing (NCQ), one SATA Port Multiplier with Command-based and FIS-based switching and max two RAID groups. Includes a half-height bracket and a low-profile bracket for use in either slimline or full-size systems.