The Huawei E3331 starts working with a voltage over 4.1V so the Lenovo Miix does only provide 3.3V internally. I will go on further with a step up controller which will be installed also inside the body of the miix.
@ scheisser.net . . . . . . . . . .“If you always do what you’ve always done, you’ll always get what you’ve always got.” -Henry Ford