can i use a single channel Atto or Adaptec SCSI ??
 

i just upgraded my computer to a G4 running ProTols Mix +. I already have a single channel Atto and a n Adaptec 2940 u2w but Digi recommand only the DUAL channel Atto, WHY ??
Or maybe i shouls just get ATA-66 drive and forget about this whole SCSI bull !!! Any comment/suggestions ??? Thanks