The SATA2-041 is a eSATA PCI Express card provides two eSATA ports and one IDE/PATA port. The SATA2-041 fits in the PCI-e slot (36pin) providing two external SATA one internal IDE slot. Specification: Supports 3.0Gbps eSATA interface. Supports two independent eSATA channels separate logic and FIFO. Supports NCQ on eSATA ports. Supports Hot plugging on eSATA ports. Supports SATA II Gen2m and Gen2i external SATA. Supports UDMA6 transfer mode on IDE port. Supports transfer rate of 133MB/s with IDE (Ultra ATAII). Supports up to 4 storage devices. Supports PCI Express 1-Lane 2.5Gbps interface (PCI-e x1/36pin)