Mass Storage Mode

My Droid X2 O'Reilly manual says that by plugging my Droid into a Mac computer USB port I will get a trident icon on my menu bar. And, that upon clicking on the trident I will get a menu that includes a choice of Mass Storage Mode. Upon selecting MSM I will get a box on my screen allowing file transfers.

I get no trident. Does Mass Storage Mode exist?

There is a file called /System/Library/Extensions/IOUSBMassStorageClass.kext/Contents/MacOS, but I cannot access it.