It's genuinely straight forward. My OP was being slightly sarcastic... Ask same question in main section and if anyone has suffered any lasting issues once they sussed initial setup.

The hard part is getting comms working and you will probably need a USB/serial converter that is compatible with your device as most modern kit do not have plain serial these days. I'm pretty certain that this cable does the null modem (tx/rx crossover, aka ears to mouth on a telephone) bit (it's still in the plastic bag and not tried, but it makes no sense for it not to), so one less thing to remember.

hth

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).