Thanks for your replies!
But well, i do not plug it into another Computer. I just insert the usb type-c into the chuwi, the other end into the (original) adapter and that one into the thing in the wall where the power comes out (:D sorry, i don’t know what’s it called in english). Just like usual charging. And then there comes the error on the hi8pro “USB device not recognized: the last USB device you connectet to this computer malfuncioned, and Windows does not recognize it…”
i kinda got around that problem with 2 unorthodox steps: First, set in settings>devices>usb “notify at problems with plugged in usb-devices” off. Second, you need to set “no sound” in the systemsounds-settings at “new device connection”. This sound kept playing every few seconds when the charging cable is plugged in.
Maybe there is also a problem with the cable? My usb-stick works perfectly and is not recognized as a new device every few seconds. In fact i can live now with it, but still it is kinda weird.
Is your LED on the chuwi also blinking when charging? Or does is lighten continuously?
Ehm the always working 16gb card is a “adata microSDhc 16gb class 10” and the sometimes not working one a Sandisk Ultra 64gb microSDXC class 10, up to 80mb/s. Well, maybe it is also because of the problem with the SD-reader Marco postet in another topic: http://techtablets.com/forum/topic/hardware-fix-for-non-working-sd-reader/