So the label on the older one says nothing about advanced format, but on the newer one it does? Is there an option on either drive or both to jumper down from 3Gb/s to 1.5? Have you tried them at 1.5? The actual link is one "t" shorter than you would think. http://discountechnology.com/ ETA: And a quick look at the site reveals not much at all in the way of discounts.