Oh. A little general note to all on the thread.
Often I see the advice about using an extension cable used where people have problem getting Home Assistant to connect to deConz.
If Home Assistant cannot connect to deConz or if deCons cannot see the USB stick then it cannot be cured by extension cables.
The extension cable is relevant when you have problems getting the Conbee stick to connect to devices. It cures RF coverage problems - ONLY