> 1. Thou shalt check voltage and polarity on new-to-thee power supplies, or thy machines shall be smote and release smoke. Yeah, so... we were going from the

> 1. Thou shalt check voltage and polarity on new-to-thee power supplies, or thy machines shall be smote and release smoke. Yeah, so... we were going from the US to England for a business trip. Someone on the team bought some inexpensive voltage converters on Amazon. When we got there and set up, we failed to follow this "commandment", and blew three fuses in the first ten minutes. Turns out the "inexpensive" voltage converters were simply a resistor. That's it. So the voltage conversion was a function of current. At "normal" current, it converted approximately correctly. But at less than expected current (idle, say), the conversion was wildly out of spec.