The Fanuc A20B-2902-0081 is a 4MB Flash ROM (FROM) memory module designed for Fanuc Series 16/18 CNC systems, including servo configurations. This plug-in daughter PCB provides non-volatile program storage, system software, and parameter retention with high-reliability Flash memory chips. It features industrial-grade components, robust edge connectors for direct motherboard integration, and low-power operation on system-supplied voltages. The module supports easy field replacement and is built for stable performance in machine tool environments. [stock available]