Thanks @felmue,
I have now got the card powered by following your observations :
connecting 5v to VIN, GND to GND, TX to RXD, RX to TXD
I don't need to trigger PWK to get the modem operational.
The modem don't connect to the network, but that's another problem..

Thanks @felmue - Yes I mean the USB on the breakout board. The referred manual states : 'The SIM7020G contains a USB interface compliant with the USB1.1 specification as a peripheral'.
And my intention was indeed to do debugging to see if the modem would connect to the network with my SIM before I start to connect it to my Arduino.

Anyone that have a connection diagram for how to connect this breakout-board to an Arduino (MKR Zero),
as I don't want to use the M5 Stack wrapping.

So I have pins PWR, GND and P/G on one side and VIN VEXT and VTTL on the other side.
Could I expect P/G to be the pin to trigger to power on/off ?

Hi,
I cant get the USB port on sim7020g modem working. I just connect my PC with a terminal emulator.
The board powers up (red led) and blinking blue NET LED.
However I only get garbage characters on my terminal as if the speed was wrong.
I have tried all speeds without success. Default is 115200 8N1.

It generates 2 USB-devices as other modems like SARA R410 do.
Should it be possible - any clues ?

Olav