I have read various SU questions, but didn't find this. I have four COM ports, RAW Serial COM ports, not USB, COM1-4. If I connect a serial cable to the machine and connect the other end to the serial device (no USB, no Ethernet, regular old RS232), which COM port do I use?
Does it matter which COM port I use, if I only have one Serial device attached? I am using PuTTY.