Allen-Bradley 8520-FR2A is a 2 MB memory expansion module designed for 9 Series CNC controllers. The FR2A designation indicates Flash RAM memory, and distributors list this unit as a Flash RAM memory module for 9/Series systems that expands the controller's capacity. The part is reported as discontinued by the manufacturer, reflecting its status as a legacy component. It is intended to augment memory in compatible 9 Series configurations where this module is supported.
