Power Over Ethernet (PoE and PoE+) - in 5 Minutes

PoE and PoE+ allow normal CAT5e (or above) Ethernet cables to carry power to a device so that it doesn't need to be connected separately to the mains. Learn all about Power Over Ethernet is just 5 minutes!

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#garyexplains

[markloughtonUK]

Who else understands what Gary is about to say before they watch his videos but watch them anyway just because he is a damn fine bloke ?? ;-)

[janlundberg]

I finally get it! Thank You Gary for the clear explanation. You've given me confidence to deal with PoE devices and talking to men about it. Jan - 68 years old, San Francisco

[Muhsin-oxvj]

I think that we've had something similar to that in the land lines, it was powered by the land line and didn't have any batteries or needed to plug it in.

[noah_the_nerd]

This is so cool!
It kinda feels like a digital equivalent to phantom power, which music gear uses to send 48v to condenser microphones along the same wires which the signal is sent.

[cinemaipswich]

POE is an absolute blessing when fitting Closed Circuit TV cameras. I use CAT 6e because some cams with IR, UV lights are a bit more hungry for power

[saeedrahimi]

What a great and simple explanation of what a POE and a POE+ is. Thank you.

[sunhine]

Pretty cool. Would be nice to have this as standard in every home router soon :)

[istoOi]

Would be nice to also include the differences between active and passive PoE. Like for people wondering why their PoE Ubiquiti AP doesn't work with their 802.3af switch/injector

[piiumlkj]

Great topic, can't wait to watch the next part which I hope will be more technical 😜

[An.Individual]

Good video.
I didn't notice Gary say but POE uses the standard cat5 etc cables (not a special cable).

[novelnouvel]

TIP: Dont use 5 volts PoE on cable over 5 meters, you wouldn't get enough power. Iinstead run 24v, 36v, or 48v adapter then use converter box at the end of the cable to convert those voltage to 5v.

[RealLifeTech]

I think Power over HDMI (or MHL) needs to make a comeback! There are so many streaming dongles & sticks sold these days and what's holding me back from getting one is the unnecessary cabling I'd need. My TV even has a MHL port but no stick or dongle supports it 😫 The right place to start removing the charger is on these things as there are better ways (for consumer AND manufacturer)

[max.]

Great video! Will you also make a video about "Power over Data Line" and Single Pair Ethernet?

[Lanzetsu]

In the next video please explain the risk of connecting a PoE cord into a non PoE Ethernet Port and incompatibility issues please.

[john-r-edge]

Gary. How does an injector affect the max advised cable run for Ethernet? Total length of "Switch to Injector" plus "injector to powered device" less than 100m? I would expect that a lot of the time injectors will be sited close to switch, so inj->device length can be nearly the full max advised length.

[andreasr]

Can higher wattage PoE++ be used with regular cat5e cables or do they need higher cats or special types of cables to handle the current?

[dienno]

Hello Gary, thank you for this excellent video and instruction. I am a newbee so pardon my question. Does the TP Link injector provide power for one device - in other words, if I have more than one device that is not POE compatible, do I need one injector for each device? Also, the description on Amazon does not include support for Windows 11. Can you recommend a Windows 11 compatible injector?
Thank you in advance.

[andrewphi]

Maaaan, I love how you pronounce "Microtik" as "meecro-"! People don't realise how irritating it is to hear "raspberry pie", "golden number fye"... -that's what I was going to say until I heard "raspberry pie" right at the end of this video :D

[MarkKeller]

*GARY!!!*
*Good morning Professor!*
*Good morning fellow classmates!*

[How_To_Drive_a_TARDIS]

One thing I'm curious about is what wires in the cable deliver power? (And is color standardized like yellow is power and brown is data or maybe blue could be power or data)