Dear friend!
It depends on the version of AUX.
The TN11AUX01 board is available in two types. For one type there are three jumpers and for the other type, there are eight jumpers inside the board. There are eight jumpers inside the TN11AUX02 board. There are eight DIP switches inside the TN12AUX board. The jumpers and DIP switches are used to set the subrack ID. There is no jumper inside the TN16AUX/TN51AUX/TN52AUX board.
Thanks!