Reading the docs, being aware of the fact I could blow up a USB port and still managing to plug in one of the USB cables on my brand new Deneb backwards. Port blown.
That was just last Friday and my forehead still hurts. 
Been there, done that on a IBM single board computer... my coworkers USB thumb drive got so hot it melted the outer plastic enclosure. Amazingly, both the drive and the SBC are still working.
I'd really like to meet the accountant who decided it was a great idea to not put a keyed connector on a USB header.
Regards,
AmigaEd
