On 07/10/04, verduron <verduron at comcast.net> wrote: > > My G4 can have two additional ATA/66 drives. When I looked at Fry's, it > did not show ATA/66, but plenty of ATA/100. > Shall I just use 100, which will work at 66's speed? Any help, would be > most appreciated. Thanks. Your G4 should be able to support ATA/66, ATA/100, and ATA/133 devices. See <http://docs.info.apple.com/article.html?artnum=31292> and <http://www.tecchannel.de/hardware/850/> for details.