Some pritner models that it's difficult to reset chips when ink is used up,Users need take out the ink cartridge and install again to reset chip,it not a good way and inconvenient.

Our new chip can solve this reset chip problem,the switch 1(as the photo) is the reset switch,Users just need press the reset switch after the ink is used up. 

The switch 2 control the chip adopts original cartridge inductor.

Available for R290/R270/R390/C90/CX5500/CX7300/CX5000