Changes
'''SW3''': '''Code''' - switch between '''UART/USB''' OS presentation <br>
'''SW4''': '''Term''' - Termination by '''120 Ω''' if needed
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===DB9 Port #1===
====SER #1 switches====
'''SW8''': Switch between '''RS232''' and '''RS485'''<br>
'''SW7''': Switch between '''Full''' and '''Half''' duplex (for '''RS485''')<br><hr>
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===Instructions===
