I have a Power Mac G5, DC 2.3 Ghz. I remember reading that it has SATA I and if upgrading, I should stay away from SATA II drives and go to SATA III for compatibility. My mom's old PC died and in it there was a 3.5" SATA II drive. There's a jumper on there to run it at SATA I speeds. Will this be ok in the PM or should I just get a SATA III drive? In case anyone asks, it's a Seagate, 160 GB, maybe 7200 RPM. It does look like the jumper is currently on SATA I speeds, which is a bit annoying if we could've had better performance all these years.