[PLUG] Meraki MR24 WAP and PoE

[Russell Senior]

My experience trying to power the MR24 with "passive PoE" and/or less than
48V were not successful.  You really need a standards compliant PoE
injector for them.

Apparently there is/was a patent on the chips that do/did the IEEE PoE
standard, which made them too expensive (I recall something like $15/chip)
for commodity grade hardware and so price-sensitive vendors like Ubiquiti
basically said "F-you" and used lower (12-24V) voltage PoE instead. Meraki
isn't price sensitive hardware.

On Mon, Nov 18, 2019 at 9:01 PM Erik Lane <eriklane at gmail.com> wrote:

> If this will do it, it would be a cheap and easy fix.
>
> https://www.amazon.com/BeElion-Passive-Injector-Splitter-Connector/dp/B01HMNJHII/
>
> I've been planning something similar to run a raspberry pi in a location
> away from a power outlet. Since I don't need hardly any power, the 12V will
> be just fine even with a long ethernet cord. (Though I'm not going to be
> all that long, really, just 20ft or so.)
>
> It sounds like your use case might be simple enough that something like
> this would do the trick. (In case it's not clear, one of these goes on each
> end of the ethernet cable, and then you plug the power pack into the female
> end and plug the male end into your device, and you're golden.)
>
> Good luck,
> Erik
>
>
> On Mon, Nov 18, 2019 at 6:14 PM Rich Shepard <rshepard at appl-ecosys.com>
> wrote:
>
> > On Mon, 18 Nov 2019, Russell Senior wrote:
> >
> > > If you can easily reach the MR24 with a regular ac adapter (12V DC
> > > output), then the PoE isn't really buying you anything. If you want to
> > put
> > > the MR24 somewhere that is hard to plug into power directly (you have
> to
> > > run ethernet to it anyway), that's where PoE becomes worthwhile.
> >
> > Russell,
> >
> > It's on the wall about 6' above the floor. The electrical cord is about
> > that
> > long and would need to be longe to reach an outlet.
> >
> > Thanks for the insights and lesson.
> >
> > Regards,
> >
> > Rich
> >
> >
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