Yeah! I know it **bleep**! :angry: but it is considered legal in US :smileyvery-happy:
People have attempted something similar here and the bottom-line is * You cannot do it*
http://community.wdc.com/t5/WD-TV-Live-Hub-General/Opening-the-hub/td-p/89463
Try with some other WD SATA 2.5 HDD first to see if takes it, then expand your search by using a lower capacity 3.5" SATA HDD from WD and see if that works…
Good Luck!