Originally Posted by
Dmanmtl
Is it pretty safe to assume that if the plugs fit, the voltage and polarity will be correct and nothing will get fried?
In my experience with Dell, yes. The only concern is if you have a dock and use the incorrect adapter, as the dock won't work. Going into the BIOS and then to the battery screen would show a warning message if there was something awry.
Generally, no. I had a small Toshiba that got very hot and would lock up when used with a different adapter with the same plug.