I have a Powermac Dual 2.0 Rev. A and I want to buy another hard drive. Are there things I should look for before I go out and buy myself a hard drive that won't work. I know one thing for sure is that it is a Serial-ATA(SATA) that I need. Is there anything else I need to know? Are there any limits in hard drive size I need to watch out for? The one that came stock was 160GB...I'm looking to get a second hard drive that's 200GB+. Any recommendations? A certain brand I should get? The last thing I want to do is buy a hard drive, open the package, install it and find out that it doesn't work. I'll be wasting time and money. I'm running Panther 10.3.9....don't know if that makes a difference. Any help on this will be much appreciated.