I have been trying to install a WD500AKSS 500 gb drive to no success. My system is XP Pro on a SuperMicro X6DAL-XTG mobo. Can't get info from any manfacturers. My mobo manual states the following: ...for drive capacities over 137 gb your system must be equipped with 48-bit LBA mode addressing. If not, install an ATA/133IDE controller card that supports 48-bit LBA mode. This drive is a SATA II drive and my mobo I believe was manufatured before SATA II's were available. I have jumpered it to act as SATA I and I have been able to format the disk. But the system refuses to recognize the drive after a few uses - and I received record/retrieve errors when trying. Is there a SATA card I can install to run this drive? I'd like to run it as a SATA II drive. Any help or card suggestions would be helpful. Thanks.