1) Model: C4841 / C4842 / C4843 / C4844 / C4836 / C4837 / C4838
2) Compatible for use with HP 1100 / 1200 / 1300 / 1700 / 2200 / 2230 / 2250 / 2280 / 2600 / 2800 printers
3) Open the air hole before installing; Do not open the refill hole
4) When the ink is use up, open the refill hole and refill it; You do not turn off the printer when change the ink cartridges
5) Turn off the printer and then turn on, then the chip will reset also we can supply original kyocera toner powder, likes tk17, tk18, tk110, km3035

Packing:
Neutral white packaging or according to customer's requirements.