SXT G-5HPnD-HG r2 and 802.11ac

Can i use 802.11ac on this SXT?

I don’t find this on ROS 6.17

No, your model is 802.11n - SXT G-5HPnD-HG r2
For AC you need http://routerboard.com/RBSXTG-5HPacD

Thanks Honzam for the quick reply and info