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. Press the two components together firmly. If the red light illuminates, it indicates correct and secure contact. After approximately 5 seconds, the red light will change to green, indicating that the ink cartridge chip record has been refreshed. Refill the ink cartridge with compatible dye ink or use other compatible inks to make it operational. Usage precautions: When the ink level shows 100%, do not repeatedly attempt to reset it, as this may lock the chip. When the ink level displayed on the chip is below 15%, reset the chip immediately using the chip resetter; otherwise, the ink cartridge may display an error message. If the red indicator light continues to blink and does not turn green: Reason one: The probes of the chip resetter are not properly aligned with the chip contacts, or the contacts are dirty. Reason two: When using a non-genuine Epson ink cartridge, the chip may not make proper contact with the probes. Product Name: Maintenance Chip Resetter Part No.: C9345/C12C93459 Port: Type-C Compatible Printers: WF-7820/WF-7830/WF-7840/WF-7835/WF-7845/WF-7848 M15140/M15146/M15147/ST-C8000/ST-C8090 ET-5800/ET-5850/ET-5880/ET-16000/ET-16600/ET-16650 ET-16600/ET-8500/ET-8550/EC-C7000 L18050/L8050/L8168/L8180/L8188/L6550/L6570/L6580/L15150 L5150/L15158/L15160/L15168/L11160 Color: As Shown Material: ABS Package Contents: 1 x Decoder Only the items listed are included; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual product. Measurement error allowance is +/- 1-3 cm.