Fanuc A20B-3900-0042/01A Memory Module

OEM memory expansion module designed for use in Fanuc CNC systems, enabling program and data storage with high reliability for industrial automation applications. Part Number: A20B-3900-0042/01A Type: Memory Module Function: Stores CNC programs, parameters, and system data Form Factor: Plug-in circuit board module Memory Type: SRAM or Flash (model-specific, typically non-volatile with battery backup) Compatibility: Fanuc Series controls (verify with specific CNC model) Voltage Requirement: 5V DC (supplied via control system backplane) Interface: Fanuc proprietary bus Mounting: Board-mounted within CNC control unit Typical Usage: NC program storage, ladder logic, system backup Manufacturer: Fanuc Application: CNC machinery, robotics, and factory automation systems Please review pictures carefully and let us know if you have any questions!