I install the drivers from Gigabyte, give a slight performance increase over the microsoft drivers. The 'IDE ATA/ATAPI controllers' listed in Device Manager are the standard (old) Parallel ATA connector on your motherboard. For the 'AHCI Controller' you need to look under 'Storage Controllers'. But you won't find any DMA there either, it only applies to PATA Drives (the updated microsoft drivers for this remove the DMA option it appears, or maybe it's hidden til an ATA drive is installed). No need to worry cos it doesn't affect your SATA drive. Most of the advanced settings for AHCI are hidden from the user.