I can’t blame the customer here. Ya, that’s the USB in the Ethernet port.

  • TachyonTele
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    26 days ago

    The only other three comments explained it an hour ago.

      • IceFoxX
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        26 days ago

        Its for the legendary wireless cable

          • IceFoxX
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            26 days ago

            It looks to me as if an ESP-01S WLAN WiFi module is installed under the plastic cover (under the stickers) and as if it is the back of a 3D printer. Then you could remove it and the host device would no longer have WiFi. If the host at least does not check whether it is present etc. when booting/starting and otherwise refuses the service