Hello,
my english is not the best, but i try to make the Point clear as possible.

I have bought 3 different Routers:
Slate AX
OPAL
Shadow

On Slate AX i tried my 2 different 4G Sticks, the Huawei E3372h-325 and the ZTE MF79U
Everything is on the newest Stable Firmware. I wasnt able to get the Huawei to work, it could be, that is a fake Product or Rebrand, so i only use the ZTE.

On the Slate AX is the ZTE MF79U not registred as 3G/4G Modem, also not as thetering. If i put a USB Hub betweend Slate AX (USB) and put the ZTE in this Hub, it works as Thetering Device well, so far i can see.

In the OPAL, i can put the MF79U direct in the USB Port and it gets registered as Thetering - and worked well.

The Perfomence is good, better as on my google pixel 5. So far, so good.

But why in the Name of … gets this stick not registred as a 4G LTE Modem.

PLEASE GL.INET. Do something with this. I will use this devices proper and good. Those Routers works so well - incept this one thing.

The Shadow should be delivered tomorrow, so i can test the Same.

I think about a USB Problem with USB 3.0 to USB 2.0 , maybe there is a lack of smoothness… Compatibility things.

I will do some Videos on my channel to this Device, but actual i want to … cry… cause this stupid incompatibilitys. Come on, you can´t be like “we tested it with 3G Modems” … bring the most actual 150Mbit Cat 4 / 6 / 11 Sticks to work with the routers.

Hope i helped a bit! Have a nice day!