GL-EV750v2 USB Serial Connection

Hi I’m looking for a bit of advice & help (apologies if this is the wrong forum). I’ve got a EV750 travel router that I am using at my allotment greenhouse to provide wifi and hook-up my weather station. I have a solar charging battery using a Victron MPPT and using a VE.Direct Serial Adapter - USB cable I would like to periodically check the Solar Array status which I think should be available by reading the serial port output.

So I’ve connected the USB serial to the USB A port in the router and from the console I can see that the device is recognised on Bus 001 Device004

root@GL-E750:~# lsusb
Bus 001 Device 005: ID 2c7c:030b Quectel EM060K-GL
Bus 001 Device 003: ID 05e3:0752 Generic USB Storage
Bus 001 Device 004: ID 0403:6015 VictronEnergy BV VE Direct cable
Bus 001 Device 002: ID 05e3:0618 USB2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux 5.10.176 ehci_hcd EHCI Host Controller
root@GL-E750:~#

But I’ve no idea how to work out what serial port the device is actually accessible via.

For instance I know that the /dev/ttyS0 port reports the EV750 battery status, system temperature, external power & charging status by running

root@GL-E750:~# socat stdio /dev/ttyS0
{OK},100,30.1,1,1

And reading the USB ports /dev/ttyUSB* I can see the Modem

root@GL-E750:~# socat stdio /dev/ttyUSB2
Quectel
EM060K-GL
Revision: EM060KGLAAR01A11M2G

So the question is would anyone have any tips on accessing the USB Serial device?