Guys, I really hope someone can help me here, because I'm running out of things to try: I installed a Sonnet Tempo SATA card in my G4. Two wierd things I noticed: 1) the Sonnet card only takes up like HALF the PCI slot. It is seated firmly, but a whole like 3 inches of the PCI slot remains empty. My research says this is normal for the Sonnet Tempo card, however. 2) The "About this MAC Hardware" reports this card as a "Siritek" card and not a Sonnet. Why would this be? Heres the problem: I connected a 500 gig SATA HD to the SATA card. When I boot up the MAC, it doesnt show the drive. I was able to get it to show once, and thats when I formated the drive, repaired it, and restored the small IDE drive to the new 500 gig drive. Of course, the next time I boot, the MAC doesnt see the drive in Disk Utility. My thought is that the SATA card is just not right and is causing the issue with the 500 gig drive. What I have NOT done is to change the PCI slot, because in the unlikely event that the Sonnet Card is damaging the current slot (because of how much smaller it is) , I dont want to damage another slot. Please let me know what you think about this. Should I go buy a different Sonnet Card? Or, perhaps, is there a way to flash the firmware on the card I have? All comments welcomed, and ANY help is appreciated here, I'm at a standstill...HELP!!