Dell Venue Pro 7140 - M.2 cards not compatable?

I have a Dell venue pro 11 7140

it has a 7265 m.2 intel dual band wireless card

I have purchased a 18260NGW wifi bt and wigig card

it fits nicely, and only the 8260 wifi and bt is detected in the windows 10 os.

Is there something limited in the tablet, to not allow it to recorgnise the wigig part of the 18260 card

It does mention wifi/wigi switch in the bios, so its obviously designed with wigig abilities of some kind

please help