ExpressCard- A1226/1260 USB 3.0

Hello,
I would like to add some tunning on my old computer.
Does anybody has experience with ExpressCard USB 3.0 on SantaRosa A1226?
Here is a seller having one for 30USD:
http://www.ebay.com/itm/251369634713?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m142 3.l2649

I wonder if this one for 8 would work:

http://www.ebay.com/itm/151206717306?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m142 3.l2649

What does the ExpressCard have to be compatibe? Is the size 34mm just the only requirement?
Thanks for any suggestions!
Dali