When I got the device, I connected it immediately and set. My experiences after the first two days were not really good. With my ZTE MF190 Surfstick (D1 Sim) directly on the notebook I had always 6mbit download and 1.4 upload. With this router, I do not got beyond 100kbit, it also blew up my Wi-Fi if I wanted to switch from 145mbit to 300 or 54. Also, the compound was not so stable. So I have the latest firmware (MBRN3000-V1.0.0.72_2.0.12WW) exchanged with the previous (MBRN3000-V1.0.0.69_2.0.12WW) and lo and behold, it goes :) So who has similar problems can also Try.
Update 06:01 The docking station is good for nothing. The connection often broke off and finally I have not even be able to connect. Since I originally only wanted to quickly hernehmen extension of leading to the balcony repeater cable and have therefore no longer needed anyway, I've done it off and the cable is connected directly. Fixed. Not a single disconnection for 2 days and the download speed is now back at 6,32mbit :)