This example shows three 7133s connected in one loop with six adapter cards..U s i n g s y s t e mU s i n g s y s t e mB2B 1A2A 1A 1A2B 1B2U s i n g s y s t e mU s i n g s y s t e mB2B 1A2A 1A 1A2B 1B2U s i n g s y s t e mU s i n g s y s t e mB2B 1A2A 1A 1A2B 1B27133 unit 1J10 J91 2 3 4 5 6 7 8J6 J516 15 14 13 12 11 10 9J2J 4J 1J 37133 unit 2J10 J91 2 3 4 5 6 7 8J6 J516 15 14 13 12 11 10 9J2J 4J 1J 37133 unit 3J10 J91 2 3 4 5 6 7 8J6 J516 15 14 13 12 11 10 9J2J 4J 1J 31-50 7133 Service Guide

IBM 7133 Series Service Manual