Never Low Power USB Chip resetter for old 7pins and 9pins ink cartridge. The Chip Resetter come without Batteries. Please use a printer USB cable to connect the resetter with a computer for the power supply. The item does not includes USB Cabble The Chip resetter can work on all Compatible Epson old 7pins nad 9pins ink cartridge. The chip resetter can not work on Epson and compatible both 98 99 ink cartridge