The SI-PEX40064 2 port SATA III 2 Port eSATA PCI-e 2.0 x1 controller card marvel 88SE9235 chipset adds two SATA III and two eSATA III ports to a computer through a PCI-e 2.0 x1 slot, delivering multiple internal 6Gbps connections for SATA III hard drives and SSDs. With full support for SATA 3.0 hard drives and data transfer speeds of up to 6 Gbps, the controller card features a native PCI Express single chipset that provides enhanced compatibility, reliability and performance for SATA 600 MB/s storage needs.