USB Superdrive and my new 15" Retina display MacBook Pro

I really feel like an idiot. I took the Apple USB Superdrive and the computer back to the Apple Store and told the employee it didn't work. He said, "Sure it does. I have one hooked up at home on the exact same computer. (MacBook Pro 15" with retina display) He plugged it in, inserted a DVD, and, lo and behold, it worked perfectly. What a shock! Now, here's the kicker. The Apple USB Superdrive had been packed in the box upside down. The bottom of the Superdrive is black with a beautiful Apple logo on it. The top of the Superdrive is the plain burnished silver color with no identifying marks or logos. I had set it on my desk the way it came from the box - UPSIDE DOWN ! With the Apple logo on top, I had been loading the CD's/ DVD/s upside down. Of course it's not going to work that way! It now functions perfectly after I was shown that I had the Superdrive upside down on the desk. I tell you, it's tough to get old. A nice little Apple logo on top of the Superdrive instead of on the bottom might have helped too. Problem solved......