My uncle bought a notebook for me (ASUS-G73JH RBB05) and I asked to buy an extra HD (at BestBuy too - and with installation service). Upon receiving the notebook the second HD was not being recognized.
I opened the notebook to see what the problem was and HD were simply released into the bay, without that support to keep it in place.
It's incredible! I paid $ 50 for the technical service just drop the HD in the bay.
I took some pictures to prove it. I'll post the pictures on various forums.
Do not use the technical service from Bestbuy!
HD on left: Bestbuy service installation. HD on right: correct installation.