In message "BigJim"
wrote:

If you use a sata 3gb on a board that only supports 1.5gb you must change
the jumpers on the hard drive,
there are usually instructions for this at the manufactures web site.

That is not correct. You only need to set a jumper on the drive if your
SATA implementation is very broken.

The SATA standard includes a capabilities negotiation phase, which,
among other things, includes speed negotiation.