WD10EARS sector size 512 not is advanced format?

Using Linux and gparted the disk WD10EARS sector size is reported being 512.
Advanced Format is sector size 512 or 4 KB ?
If is 4 KB how is possible change the sector size to 4 KB ?
Western Digital have any software change sector size to advanced format ?

Strange … if the disk is advanced format how was changed ? wrong information ?
Thanks for reply.