The number of HP J8162A XL Access Controller Modules known to this system.
If this system is an HP J8162A XL Access Controller Module, this value will be 1.
Otherwise, this value will be the number of HP J8162A XL Access Controller Modules
this system is connected to (i.e. An Access Control Server 740wl
connects to multiple HP J8162A XL Access Controller Module's).