Add an internal SATA port & an external SATA (e SATA) port to your desktop computer through a PCI expansion slot. This PCI based SATA Controller Card means that you can turn a PCI slot into one internal SATA & one external SATA (e SATA) connection. Supporting SATA 150 hard drives, & data transfer rates of up to 1.5 Gbps, this controller card is the perfect solution if you need an extra SATA port or want to externalize your storage.