I just purchased an SATA hard disk (seagate). It supports 3.0 transfers but my PC only supports 1.5 transfers. The drive comes with a jumper that limits it to 1.5 by default. No problem and everything works right.
I'm just wondering though. What would happen if i took the jumper off? I can't really see that it would make a difference, right? I think i even had this setup for a little while by accident. If this is the case, why ever limit the HD to 1.5?