I can confirm this is true. In my case no jumper was necessary. "It just worked".
And from what I understand there is ZERO performance difference. Modern computers/drives can't take advantage of the speed of ATA133 much less SerialATA 3.0. It's similar to the almost zero performance difference of APG vs PCI-E. Basically all just a marketing scam at this point. I'm sure someday it will matter, but by then you'll have a completely new computer....
Actually there is a bit of a performance gain with PCI-E over AGP, just not as much as people make us think.
Actually with AGP 8X and PCI Express there is not difference the only problem with AGP is it can't handle the amount of power that PCI-E can, eventually there will be a difference but there is not enough data going in and out of the graphics card for there to be any difference betwenn the two as of yet.