YXD-RB300 B500DN Chip Resetter Suitable for EPSON cartridge model: T6171/T6172/T6173/T6174/T6181/T6161/T6162/T6163/T6164.ect. Suitableforprinter model: Epson B300/B500DN/508.etc YXD-RB300 B500DN Chip Resetter is versatility. it can automatically identify the ink cartridge andcan reset original chip. YXD-RB300B500DN Chip resetterManual: YXD-RB300 contains a bulge, which are designed to match with Epson black and color cartridges. 1. Make the bulge of the reseter contact the cartridge correctly,then press the resetter by hand.Keep the chips and resetter pins in firm contact,meanwhile Red light is flash. When it keeps green lightening, chip reset operation is successful. 2. Cartridge is ready for use after refilling with ink.