Adds support to OS X for the Magic Trackpad
If you’ve got a Magic Trackpad or Multi-Touch Trackpad and have had trouble getting them to work right or to activate the three-finger drag gesture, then Magic Trackpad and Multi-Touch Trackpad Update is what you need.
The update also installs the three-finger drag gesture and inertial scrolling for certain MacBooks and also installs a Trackpad System Preferences pane for configuring Magic Trackpad on Intel-based Mac desktop computers that support Mac OS X v10.6.4 and above.