hi
To get the stick running with mikrotik routeros it’s mode has to be changed to serial modem.
I do this with my ubuntu 14.04 workstation.
First install usb-modeswitch and minicom:
aptitude install minicom usb-modeswitch
Now plug in your stick configure the ip-address of the usb network interface. We also have to set the ProjectMode via http request.
ifconfig ethx 192.168.1.2 netmask 255.255.255.0
http://192.168.1.1/html/switchProjectMode.html
Afterwords fireup minicom and change modem to modem mode (turn off hardware flow control)
minicom -D /dev/ttyUSBx
Paste the following code to minicom terminal
AT^U2DIAG=0
When you plug in the stick to the routerboard now you get an pppx dialer interface.
Have fun!