there is 2 usb on it, and you can manage to eventually put your 3g/4g as your internet for the modem, i've just got it he is insane ^^

Reading the german manual on paragraph 3.5.3 (3G/4G) they refer to check under the list of approved USB Modems which DO WORK. And there i find almost 90% are huawei and zte. If i start a search for USB Tethering - nothing is found. What Mobile Phone and OS are you using for USB Tethering?