Powering AP's via POE switch or injector

[jodamus112]

Hi,

Could anyone please advise if there is any difference in the power supplied to a 1142N AP when using a power injector (AIR-PWRINJ3/AIR-PWRINJ4) compared to using poe on the switch port (2960S 24 port POE switch WS-C2960S-24PS-L).

Thanks.

[Scott Fella]

There is no difference, they both will power up the AP... it just depending on how many devices you plan on powering up on the switch.  So take a look at the power supply and you can figure out how many PoE devices you can power up.

[jodamus112]

Thanks Scott, not looking to power much devices, 2 or 3 at most, but someone once advised that in order to get full N potential from the AP's you need injectors. I take it this is not the case.

[Scott Fella]

No... The only AP that required more power was the 1252, which you could still power up one radio at full power or have both radios witht eh 5ghz at a reduced level.  The 1140's which you have will work fine on the 2960.

[Leo Laohoo]

but someone once advised that in order to get full N potential from the AP's you need injectors.

Someone got their facts wrong.

If I was to get the full potential with N, I'd look to plug the WAP into a GigabitEthernet port.  PoE or Injector won't make any difference.

[jodamus112]

Thanks a lot guys.

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