Thank you for your answer.
I have yet another little question.
Do you know if Mikrotik plans to release a faster version of the modem in the near term?
(150Mb/s LTE modem, sounds a little bit "outdated". I think in 2018 the minimal people could expect is a 300Mbit/s LTE-A modem.
At least the price for the 150Mb/s version is in the right range, I would even say, it's cheap for a "waterproof", dual SIM, PoE device. But I think there is room for a faster version in the $150-170 range.)
EDIT:
Is the Mini PCIe LTE Card installed in the Mikrotik LtAP mini LTE replaceable and software compatible with any other LTE modem card? (AT command are standardized I think at least)
Is the SoC installed in the Mikrotik LtAP mini LTE powerful enough to handle it?
Because there is a LTE-A cat 6 (300Mbps) card available from Sierra Wirelss. It even is an industrial grade card (-40°C / + 85°C), perfect for the Mikrotik LtAP mini LTE.
https://www.sierrawireless.com/products ... ts/mc7455/
EDIT 2:
They even have a 600Mbps LTE-A module (M.2 format).
I have to check if those modules use a PCIe connection or an USB connection (which probably is incompatible with the Mikrotik LtAP mini).
But they are really expensive modules (when sold separately).