I won an Apple 1

I won an Apple 1

Steve G. has been auctioning Apple 1 kits on eBay. The first auction he had, he offered a free kit to anyone who could guess five differences between the two revisions of Apple 1.
I did some web research and won the prize!
Here are my correct answers (in yellow).

You can see the Apple 1 built here:
http://www.applefritter.com/node/17740