There are two ways to tell if a Chelsea switch is an AP or not 1 through programming, 2 by physical inspection.
1. Programming - when you enter Program Switch and first enter on the switch in question if the word "Setup" is highlight then it is an AP switch.
2. Inspection - The Chelsea AP switch are the only switches that the RJ-45 socket accepts the cable from the bottom of the switch. If the cat-5 cable connects horizontally towards the back of the switch or connects with the 1-2-3-4 connector it is not and AP switch.