[TriLUG] Fwd: WiFi AP recommendations

[Wes Garrison via TriLUG]

So anything that can be powered over Ethernet can be called PoE.

Cisco famously had a non-standard implementation for years that used 48V
with +/- inverted from standard implementations.  This is used on the
ubiquitous 7920/7940/7960 VoIP phones.

Ubiquiti's 24V and 48V passive PoE implementations are also non-standard.

802.3af, 802.3at, and 802.3bt are the official PoE standards, colloquially
known as PoE, PoE+, and PoE++ representing a bit over 12W, 25W, and 51W/71W
respectively.
Power over Ethernet - Wikipedia
<https://en.wikipedia.org/wiki/Power_over_Ethernet>

If the sticker on the device says 9V, I wouldn't power it with anything
much higher than that.  Certainly no higher than 12V.  If it says "input:
9V - 56V", then have at it.

On Wed, Nov 10, 2021 at 10:30 AM shay walters via TriLUG <trilug at trilug.org>
wrote:

> There's nothing on the AP's data sticker or in the user manual to indicate
> that it can handle anything other than 9 volts.  (I was mistaken:  The AC
> adapter is 9V, not 12V.)  The instruction sheet calls it "POE" when using
> the provided power injector, but doesn't mention anything about using it
> with other power supplies or other voltages.  So, I'd guess not.  Although
> it does seem like they would specifically warn against doing that if higher
> voltage would be a problem, since they do call it "POE".   TP-Link
> TL-WA801ND is the one I'm looking at.
>
> -Shay
>
>
> On Tue, Nov 9, 2021 at 8:13 PM Mauricio Tavares via TriLUG <
> trilug at trilug.org> wrote:
>
> > On Tue, Nov 9, 2021 at 5:43 PM shay walters via TriLUG
> > <trilug at trilug.org> wrote:
> > >
> >       Maybe it can handle a voltage range, so 48V is fine with it
> >
> >
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