Hardware Blues!

Guess what I did for 8 hrs today? Wrongly configured a piece of hardware and got all too agitated about it!
But then, conforming to 80-20 principle (or should I say 96.875 - 3.125 principle to be precise), I realised my mistake in the last 15 minutes and rectified it. I had merely started off with the wrong numbering side while connecting the pins. What a waste!