A:
Thanks for the reply. I've done more research since my original question and I think I understand now. First, I do not need any card to use the drive. The sata cable in my old computer will connect to this new drive and the drive will operate at 3 gbps, just like the old one.
The add in card would be to have the drive operate faster than 3 gbps in an old system 3 gbps system.
I think the BB website should say up to 6 gbps because the drive is rated at 6 and will operate at that speed in a new 6gbps computer.
Please correct me if I'm wrong.