@Ruud
Splinx said something about the left and right USB-ports. Can you test the docking
http://accessories.ap.dell.com/sna/p...&sku=452-11648 a few days only connected to the RIGHT usb port (where the button is to see the battery power) ?
There are known problems with the left USB port... In fact i'm getting serious low transfer speeds when using an 64GB USB3.0 pendrive connected to the left usb port... Much higher speeds when using the RIGHT usb port..
Also my Samsung Galaxy SII doesn't get recognized on the left usb port... Another day wasted my time to reinstall the whole machine...