I have an ASUS P3B-F motherboard with a Promise Ultra 66. My card is not a RAID. It installed with the driver on Win2k CD. All is well. It hibernates and stands by. Some people have noted problems with other controllers and other motherboards. This is all I have. I can tell you something about the Abit BF-6 and BE-6II. Both boards are IDENTICAL EXCEPT, the BE-6II has ultra 66 and the BF-6 has an extra PCI slot. This is probably because there are only so many IRQ's to go around.
 
I have a friend with a BF-6 and here's what happens. He CANNOT standby or hibernate. He is using an Adaptec 2930U2W with NT4 drivers. I see numerous people asking about the Abit/Ultra 66 combo. I really think the best approach is to go beat on Abit to work this out. It's only a theory. I urge those with PCI controllers of any type to come forth with their experiences with these Abit boards.