A table that contains 8 rows with the last source addresses found on the hub's ports. Each row in the table reports the last source addresses for specific slots in the hub: #1: modules 1,2,17,18; #5: modules 9,10,25, 26; #2: modules 3,4,19,20; #6: modules 11,12,27, 28; #3: modules 5,6,21,22; #7: modules 13,14,29,30; #4: modules 7,8,23,24; #8: modules 15,16,31,32; The data in the items appears by the slot order defined above. All 8 items exist even if some of them are empty.