The Intel Desktop utility also reports this on my system.
I guess that this is just a dummy value as all disks on my system are connected using sata.
HWiNFO 4.02 reports for my SSD:
Driver controller = Serial ATA 6Gb/s
Ultra-DMA mode: total 5 (ata-100), Active 2 (ultra-dma/33)
Info about active DMA transfer modes can be ignored.
SATA devices emulate the behavior of PATA transfer mode supported/enabled bits in ATA IDENTIFY data.
Legacy IDE drivers could still be used to access SATA devices if controller is set to IDE Mode. A "Set Transfer Mode" ATA command issued by a legacy driver modifies IDENTIFY bits as expected but has no effect on the actual transfer rate. But changing to any PIO mode would have a significant effect as the legacy driver would use slow programmed I/O then.