Ultra 33 on Ultra 66 controller

[sab3864 0]

Can you use a Ultra 33 drive on a Ultra 66 controller card without any problems? If I use a controller, do I need to turn off the built in controllers?

[badboy 0]

The answer is yes and no you do not have to disable the on board IDE. Most ATA66 PCI card are backwardly compatable with ATA33.