Ah sounds like two compounding issues then! I referenced this issue https://www.sleepyponylabs.com/blog/pl2303 since so many cables I had previously, even from the router and switch maker that came with the device, stopped working.
Great to know that there’s a whole other bunch of issues around these cables further making life tough for consumers.
I’m in Australia, generally, we have cooking instructions and microwaves that talk about wattage and time. Never duty cycle.
Eg a sauce packet says 600w 30sec. Press power button until 600w and put it in 30 seconds.
I know there’s duty cycles, you can hear them. I don’t know if that’s how it’s converted as a fraction of the 1500 watt maximum (40% duty cycle = 600w) but you hear it turn on and off most on the defrosting preconfigured buttons.
Either way, I wouldn’t be surprised if it’s all just the same underneath with regional translations.