Tutorial: Align the chip with the corresponding groove on the chip resetter so that the probes of the chip resetter correspond to the contacts on the ink cartridge's chip. Bring the two components together tightly. If the red light comes on, it indicates correct and good contact. After about 5 seconds, the red light will change to green, indicating that the ink cartridge chip record has been refreshed. Inject new dye ink into the ink cartridge or use other brands or compatible inks to make it usable. Usage precautions: When the ink shows 100 percent , do not always try to restore it, otherwise, it will lock the numbers. When the ink level displayed on the chip is below 15 percent , you must reset the chip with a chip resetter immediately, otherwise, the ink cartridge will display an error message. The red indicator light continues to blink and does not change to green: Reason one: The probes of the chip resetter are not aligned with the contacts on the chip, or the contacts are dirty. Reason two: If a non-genuine Epson ink cartridge is used, the chip may not make close contact with the probes. Product Name: Maintenance Chip Resetter Part NO.: C9345 or C12C93459 Port: Type-C Suitable Printers: WF-7820 or WF-7830 or WF-7840 or WF-7835 or WF-7845 or WF-7848 M15140 or M15146 or M15147 or ST-C8000 or ST-C8090 ET-5800 or ET-5850 or ET-5880 or ET-16000 or ET-16600 or ET-16650 ET-16600 or ET-8500 or ET-8550 or EC-C7000 L18050 or L8050 or L8168 or L8180 or L8188 or L6550 or L6570 or L6580 or L15150 L5150 or L15158 or L15160 or L15168 or L11160 Colour: As Shown Material: ABS Package Contents: 1 x Decoder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.