System in question is a Dell Precision T3500, W3570 CPU, 12GB DDR3 PC3-10600 RAM, video HD5850, OCZ 96GB SSD as an operating system and applications drive. All internal hard drives are controlled by a pair of drivers ASUS U3S6. The DVD is controlled by integrated SATA controller (X58) as a 2TB external hard drive via the eSATA port provides the MB. ASUS controller 1 is now only controlling the OCZ Vertex. ASUS is the driver controller to Seagate Barracuda 2TB SATA III XT drive 0 and 1 as the unit WD1002FAEX During the POST driver ASUS adequately recognize the Seagate SATA III, WD SATA II is shown as. The second controller as adequately recognizes the OCZ SATA II. Why WD is not seen by the controller and SATA III? No jumpers are in place in the WD as my understanding is that the left does not bridged the unit must function in inhabitant mode SATA III, 6 Gb/sec. Any help in straightening this would be much appreciated.