C79 continuous ink supply system 1. With auto reset chip 2. Install and fill ink convenient 3.Save money, protect ... risk of CISS seller ), avoid the undected chip problem because of updated Epson printer, decrease the stock risk of CISS seller.3 ... for:Printer model: C79/C90/C92/CX3900/CX4900/CX7300/CX5500Cartridge model: T0731, T0732, T0733, T0734 continuous ink supply system with auto reset chip