Features and Specifications: Replacement board for chain drive models: IC250B,PMX 300, PMX500 ICB, 496/696 CD/B. Replacement board for chain glide models: GCG 350/350/350M, PCG 400/450/500ML/600/650/700ML, OCG 510/550/600ML/710/750/800ML This board has 6 terminals and will work as replacement for the 3 terminals board (20380R)