"matching stand-alone screen"
Analog Experience, The Laboratory: the box contains the 49-key USB/MIDI controller keyboard and the Analog Laboratory software disk/manual and registration card.
The Analog Laboratory software runs on Mac or PC.
Maybe the "clerk" thought an iMac (as pictured on the back of the box) was a "matching stand-alone screen"?
By the way, please note that the CD inside the box is now outdated.
Instead, you should download the latest version of Analog Laboratory (currently 1.2) from the Updates page:http://www.arturia.com/evolution/en/downloads/updates.html