Product Detail Redefined Bus Master Programming interface for IDE controllers to support up to four bus masters in a single function. Supports ATA PIO mode 4, multi-word DMA mode 2 drivers and UltraDMA- mode6. . The "SYBA Combo IDE1/eSATA1/SATA2 PCI Card SY-VIA6421-3S1P" is best product for you. We recommended SYBA Combo IDE1/eSATA1/SATA2 PCI Card SY-VIA6421-3S1P