The GE Fanuc Memory Cartridge, part number IC655MEM521, is a 4K EEPROM module designed for use in the Series Five PLC systems. This component provides essential memory support for CPU operations, ensuring reliable performance and data retention within the IC655MEM5 and IC655MEM52 controller families. The Memory Cartridge is engineered for compatibility with a range of applications, enhancing the operational capabilities of GE Fanuc automation systems.