SIIG DP eSATA 6Gb/s 2-Port PCIe i/e Host Adapter (SC-SA0N11-S1) Adds 1 external SATA (eSATA) & 1 internal 6Gb/s channels to your PCIe system Supports port multiplier Installs in standard height or low profile chassis with included brackets Works with the latest 6Gb/s SATA HDDs and backwards compatible with 3Gb/s & 1.5Gb/s HDDs