2PT PCIE ESATA / SATA 1 EXT + 1 INT CARD Turn an available PCI Express (1x) slot into an internal SATA or external SATA (eSATA) connection. Supporting SATA 300 (SATA II) hard drives and data transfer rates of up to 3Gbps, this is the perfect solution if you need an extra SATA port or want to externalize your storage. It also features Port Multiplier support with command based switching for connecting multiple external hard drives to host through one eSATA connection.