EC21-EUX is not recognized (lsusb shows no name)

IoT Modules LTE Standard Module
1

lsusb output:
Bus 002 Device 005: ID 2c7c:0121
Bus 002 Device 023: ID 046d:c016 Logitech, Inc. Optical Wheel Mouse
Bus 002 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

The first one belongs to the GSM module but I cannot use it or communicate with it whatsoever.

Linux (3.14.52) armv7l Debian 8.4

Any response is appreciated, thanks in advance.

2

Did you added Kernel related drivers and enabled Kernel related options, rebuild Kernel and bootet from it as described here

3

Yes, I suppose the problem is, modem being rejected due to insufficient bus power, I am bypassing the bus power protection by using echo "1" > /sys/bus/usb/devices/2-1.4/bConfigurationValue, (output: new config #1 exceeds power limit by 400mA) but still not working. This usually helps when the bus is short on power, but not in this case.

4

lsmod | grep option
can you see the kernel module option?