Texas Instruments TI-84PLADAP Presentation Link Adapter (TI-84 Plus and 89 Titanium Series Calculators) Compatible with TI-84 Plus series and TI-89 Titanium graphing calculators Connects your calculator to a TI-Presenter, TI-ViewScreen, or TI-SmartView display Convenient USB interface; easy to connect and use Lightweight design for portability Genuine Texas Instruments quality accessory