I'm guessing that we're talking B&W G3 not iMac. Neither has USB2 ports but you can install a USB2 card in a B&W
If you went by the paper specs you'd think for speed that it'd be USB2, Firewire 400 then ATA/33 but the real world is a lot different. On a B&W G3 with a 7200 rpm drive you'll likely get around 23mb/s on the ATA/33 connector. USB2 will be substantially slower at around 18 mb/s. FW 400 would beat both of those at around 35 mb/s. That's in PPC Macs. USB is processor intensive, in Intel macs the USB2 is usually almost as fast as FW400. One time it isn't is if you're booting off a USB2 drive. Then a lot of CPU time is being used by the boot process. I haven't timed it but the couple times I tried, it seemed to take about twice as long as on FW400. Now if you're planning on buying a card then I'd go SATA. I used a SATA card for a while in a B&W G3 and it was fast. I can't give you specs on that as I never did check to see how fast it was in mb/s. Right now the card is in a MDD G4 and it's considerably faster than the G4s ATA/100 drives. Still haven't clocked it. Just a thought. hopefully you aren't still using the original 6 or 12gb hard drive. Those drives were dogs. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list