Hello Lukas,
I loose all the connected USB devices, not only the mount.
This weekend I have removed the USB cables connected to the CCD and the focuser and I have installed this device: http://www.silexeurope.com/en/home/products/usb-device-servers/sx-ds-4000u2.html that is much better than the Icron, the problem have been solved, but still the mount lost the USB near the meridian, but I think is an issue adjusting the calibration of the motors.
What a pitty...but the USB devices that are included in the DEC are really not functional, I have planning to buy another Silex to connect the Mount directly removing the Icron, this device is much quick and a reliable.
I will keep you informed about my evolution.
Best regards
Lluis Romero.
https://www.flickr.com/photos/llromero/
http://www.astrosirius.org/