The switchable 1 Ohm resistor should be only present at a edm-03x board.
Position A for 69GG is connecting the 3.3V_SS_PG1 to southbridge pad 4C.
Position B for 61GG is grounding this line.
At other board versions, I don't know if a 69GG will works propper without 3.3V at pad 4C.
Additional in...