I have been playing with HP calculators for a few months and last week bought a very nice 48SX off ebay. About the same time, I saw a Solve Equation Library card for sale and ordered it as well. When the calculator arrived, it turned out to have had an Equation Library card installed so now I have two of them.

The one that came in the calculator is an 82211A and the other is an 82211B. Is there a significant difference between the two?

The B card is still in its original package so I don't want to open it if there isn't some advantage to it.