This new PCI Express controller offers the latest 3G/sec SATA performance and configuration flexibility at an amazingly affordable price. Comes with 2 eSATA II ports for external SATA connection. the controller can also be installed in low profile PCs using the bundled low profile bracket. The two ports can be configured as individual ports, as RAID 1, 0, 0+1, RAID 5 or JBOD. the controller is also Port Multiplier compatible, thus offering potential expansion capability and new storage solutions.