Sierra Wireless cards not recognised?

Hi, I am not new to Mikrotik but it’s been a while since I have done anything serious.

I have a RBM33GG and am trying to get Sierra Wireless modems working in it…

I’ve tried MC7455, MC7403, MC7710 and MC8705 (in descending order of speed - the last is not LTE).
None are recognised. I’ve tried them in either slot in the board, I have removed the usb jumper, I have upgraded from 6.48 to 7.1beta6 and no joy…

Under system-resources-PCI the wireless card I am using is recognised but the cellular card is not.
I have an R11e-LTE6 on order and I hope that works!

Any thoughts please?

Cheers, Bill