   pinMode(16, OUTPUT); //Green Status LED
   pinMode(15, INPUT_PULLUP ); //Always ON/USB Controlled switch
 
-  Serial.begin(9600);
+  Serial.begin(9600, SERIAL_8N1 );
 
   Set5V(false);
   Set3_3V(false);

    ; // wait for serial port to connect. Needed for native USB port only
  }
  Serial.println("[I] USB switcher booted up.");
}

void Set5V(bool s)

  Serial.print("[");
  Serial.print(line);
  Serial.print("] ");

  if( line.equalsIgnoreCase( "?" ) ){
    Serial.println( "OK, available commands: q, enausb, disusb, ena3_3v, dis3_3v, ena5v, dis5v" );
            digitalWrite(10, LOW); //Yellow Status LED
  }else if( line.equalsIgnoreCase( "q" ) ){
    Serial.print( "OK, " );
    s = "5V:";
