Should I use the 4 pads on the left? (RX/TX/GND/3v3), is this a viable option and would that be WG/G/WBR/BR in a 568B? What is the proper way to interface with these pads?
Or do I use the 10 empty holes labeled RS232. I have a COM header on an older PC with a male db9 ribbon cable to that port. I can use that to connect to those pins(I like to solder and have breadboards and wires for connecting).. but I thought serial is 9 not 10, so kind of confused there.
Can anyone help me with these two connections and point me to proper solutions? I would like to not spend more money and test my luck with what I have available to me here.