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6. Carefully remove both boards, keeping them in the same plane and not disconnecting them.
There is a connector between boards: do not break it.
7. Disconnect the power supply unit (smaller board) from the mainboard.
8. Connect 12V PSU for Hub/Hub Plus/ReX to the mainboard using the eight-pin connector
between them. Do not warp or bend the antennas while replacing the board: this can cause
the device to malfunction.