Guerrilla USB cable for TI 84 Plus, TI 84 Plus C Silver Edition, TI 89 Titanium, TI Nspire CX & CX CAS graphing calculators Works for TI 84 Plus, TI 84 Plus C Silver Edition, TI 89 Titanium and TI Nspire CX&CAS TRANSFER FILES FROM CALCULATOR TO MAC OR PC Extends and simplifies the functionality of your TI calculator Ideal for software downloads and backups Manufactured by Guerrilla- the #1 brand of calculator accessories.