Fanuc A20B-2002-0521 I-O board is a surface mount version without MPG wiring. This I-O board works with the Fanuc 15i, 16i, 18i, 21i control systems and series varients. DNC offer exchange, testing and repair of this important input output PCB that sits at the first generation of Fanuc i CNC controllers, that allow FSSB interface to the servo modules. DNC offer a full service for the A20B-2002-0521 board. Outright sales is possible stock permitting, however exchange and repair is the norm with warranty being 180 days.