I have purchased an AIR-AP1231G-E-K9 which I believe has the radio :- AIR-MP21G-x-K9
i.e A 2.4 Ghz radio.
In the docs it says that this radio supports 2 external antennas.
However, it is not very clear if this model ALSO has integrated / internal antennas.
Also, if only external antennas are supported, then can it work with just a single antenna ?
Will having only 1 antenna damage the radio ?