IMHO cctk is not wrong as it is still called that "\Dell\Command Configure\X86_64\cctk.exe". All examples in the papers are "cctk.exe --parameter". Anyway the USB Boot seems to be related to "--usbemu". The description only says: "Enables or disables emulation of USB devices." Maybe you can add a keyword like USB boot or something like that. [URL]   ---- Thanks to [NAME] for solving his own thread [URL]  
Think I misplaced my previous post. Read all documentation but couldnt find anything. In BIOS under System -> USB configuration there is an Option "allow USB Boot". This is not controllable by the poershell provider / cctk!
missing option -> allow USB Boot