@jay_s_uk Thank You! Now I am connected and already load my configuration. In all getting started guides i found the first point to connect via usb. Your answer was greatful 
@dc42 the STATUS LED was flashing once a second.
Best posts made by Bowski
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RE: No USB connection with MB6HC / no device manager visibilityposted in Duet Hardware and wiring
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RE: duet 3 6HC Rat Rig Killerbee ( RRF reprapfirmware)posted in CNC
@jay_s_uk
great i will go this way!