Setting Transfer Rate for an SATA Hard Drive

[Dilmog]

Hey, my Dad recently purchased a Western Digital Caviar 640gb hard drive in order to boost the storage on his computer (which he needs due to all of the games that I've installed on it over the years ). The motherboard that he is using is an Abit AV8 3rd Eye Motherboard, which supposedly has a maximum transfer rate over SATA of 1.5 gb/s. However, I think that the default transfer rate for the hard drive is 3.0 gb/s, so the computer has not been able to detect the drive.
Is there any way that I could change the transfer rate of the drive to 1.5 gb/s? Maybe I could hook it up to my other computer (which is 3.0 gb/s compatible) and install some drivers that would allow me to control the transfer rate?
Thanks!

 

[Tmagic650]

There might be a small jumper on the SATA drive, that is used to vary the transfer rate

 

[Rick]

Yes, there is. Pins 5-6, most likely. Here's a recent thread with more details

When you say "can't detect" though, do you mean it doesn't show up in the BIOS, in Windows' device manager, diskmgmt.msc or under "My Computer"?