Region : Italy

Model : TL-WA7210N

Hardware Version : V2

Firmware Version :

ISP :

hi i own two TL-WA7210N v2 with firmware TL-WA7210N_V2_131118
On the firmware download page ( http://www.tp-link.it/support/download/?model=TL-WA7210N&version=V2)
i see there is a new version: TL-WA7210N_V2_140730
but in the note it say: "For TL-WA7210N(UN)_V2" and not "For TL-WA7210N V2" like the TL-WA7210N_V2_131118 version.
it's safe to use on my TL-WA7210N v2? what is UN for??