INKUTEN Chip Resetter for use in PGI-270, CLI-271 / PGI 270XL, CLI 271XL Ink Cartridges PIXMA MG5720, MG5721, MG5722, MG6820, MG6821, MG6822, MG7720, TS5020, TS6020, TS8020, TS9020 Resetting the PGI 270 PGI-270XL black and/or the CLI 251 CLI-271XL color cartridges is a snap with this USB powered resetter. For use in the following printers: PIXMA MG5720, PIXMA MG5721, PIXMA MG5722, PIXMA MG6820, PIXMA MG6821, PIXMA MG6822, PIXMA MG7720, PIXMA TS5020, PIXMA TS6020, PIXMA TS8020, PIXMA TS9020; *This resetter requires a USB cord for power. (Not included) Benefit: No batteries needed. Conveniently plugs into your computer, and easily plugs into a wall outlet with an adapter. Our chip re-setter makes refilling of the original cartridges or after market cartridges possible. This re-setter enables the chip on a used Canon cartridge to be reset to full, making the cartridge refillable. This resetter is set by the maker for 100 resets and then it will no longer work. Once 100 cartridges have been reset the led light will stay red.