This object specifies the type of backoff algorithm used on the port. A port can use the standard ethernet algorithm or, for PACE applications, it can be set to low latency mode. In this mode, the backoff algorithm is optimised to minimise the possibility of collisions. PACE mode can be set for the whole stack or for individual ports. When a unit is initialised to factory defaults this object is set to useDefault(2) for every port, and the actual setting for the port is decided by the value of prConStackPaceMode. The manager has the choice, therefore, of varying the mode for every port in the stack, or for individual ports only.