Ultra-ATA Hard Drive in the PowerPC Mac Minis?

I'm thinking about getting a second-hand Power PC Mac Mini, and I looked into upgrading the hard drive.

There are described as Ultra-ATA, which I don't know about. I can cope with IDE or SATA, but I don't know which type of drive I would have to buy to ensure a compatible with an Ultra-ATA connection. Is it a third type, or one of the normal two? Anyone know?

CanadaRAM said:

UltraATA = IDE = PATA

Guides: Hardware: MR Guide to Hard Drives

Click to expand...

Thanks: I should have thought to look in the Mac Guides section. Having looked, I can see it's very useful.