A20B-2900-0660
Fanuc A20B-2900-0660 Peripheral module. Normally this simm module is fitted within the 15-B CPU MAIN card and listed in the GE FANUC parts manual as a peripheral smd.
Running the 15 control config in which it stores the system setting and programs. A20B29000660 additional processing pcb is available today, either as exchange or on an outright basis stock dependent with testing services are available also.