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Product Features: Includes all features and is fully compatible with the TI-83 Plus. Connect all units (student and teacher models) to the ViewScreen TM panel or TI-Presenter TM via the TI-84 Plus Presentation Link. Includes a USB cable for computer connectivity computer. Stores up to 30 Apps. 11 pre-loaded: Cabri ® Jr., CBL TM / CBR TM, Conic Graphing, Inequality Graphing, Probability Simulation, Science Tools, Study Cards TM, TimeSpan TM, Topics in Algebra Chapters 1-4, Chapter 5 Topics in Algebra, Transformation Graphing . 2.5x speed of the TI-83 Plus. Memory available to user: ROM = 480 KB, 24KB RAM =.