FANUC A20B-8002-0330 is a Panel i Backplane Expansion Slot PCB designed for FANUC Panel i and CNC control system architectures. The board functions as a backplane expansion module, providing interface and slot connectivity for additional control, communication, and option boards within the CNC system. Engineered for reliable signal distribution and system integration, it supports stable communication between installed modules and contributes to the overall scalability and maintainability of FANUC control platforms. [stock available]