What's the catch?

Well, unless you use an injector, your switch needs to support poe. Said switch has a number of ports that support poe, but also a maximum
wattage it can supply to all ports together.
Apart from that: pretty handy for network camera's, only need one cable.

>>105891794 (OP)
depends on application, it's for devices mounted in places where there's no mains socket close, shit on the walls, cameras, some wifi repeaters or shit like that. basically useless for most peopel. ah yes, and limited power, can't push too many watts

Two wire could easily carry power and all data. Put stable 50 volt DC and then Mhz-GHz signal. Gay retards made it so you have multi wires.

>>105891794 (OP)
when one of your large appliances turns on, your internet will cut for a bit.

22

>>105891794 (OP)
It just works.

Why does one need this outside of professional business networks?

>>105891991
CCTV

>>105891794 (OP)
Pretty niche use. It's good for surveillance cameras when you don't want multiple cables.

>>105891844
>camera's
wow, kill yourself

>>105891794 (OP)
I once plugged a PoE cable in my laptop's Ethernet port and it started smoking.

>>105891918
>Put stable 50 volt DC
And there is your issue, kiddo.

>pö

>>105891918
ethernet runs at 100 meters length in noisy environments, and is cheap af. can't force too high bandwidth in those conditions

>>105892021
Cheap think shit.

>>105892034
yeah a ThinkPad

>>105892021
That means the switch was faulty.

>>105892069
is it supposed to negotiate PoE? I thought it was just blasting whatever volts 24/7

>>105892080
Depends on the switch but quality hardware negotiates. We run cameras and all desk phones over PoE. The desktops and laptops as well as the docking stations all run over the same switch. No smoking. But one 48port also costs 7000€.

>>105891794 (OP)
PoE act like leylines as channels for spirits so you're basically haunting yourself

>>105892023
Just don't have GHz noise & your golden

>>105892194
On 1km of cables and countless cheap PSUs. Sure.

>>105892021
there is PoE and there is fake poe where 4 wires are used to supply voltage, real poe doesn't fry the target device if it's not supposed to be charged by it.
the fake one uses a splitter at the end of the ethernet cable

>>105892121
>quality hardware
I am looking for a quality 16 port PoE+ switch. Any suggestions?

>>105892016
*you'reselve

>>105891794 (OP)
>What's the catch?
PoE switches tend to be bigger and have louder fans.

>>105891794 (OP)
the real kicker is having battery backup in your rack power your surveillance cams.

>>105892722
Wouldn't it make more sense to have it for the entire house and diesel generator? My fridge is more important than my cameras.

>>105891794 (OP)
It took me 3 hours to terminate 4 keystones and 4 cat6 cables. I don't know how people who do this for a living keep themselves sane

>>105893946
Skill issue.

>>105893946
That should take 30 minutes at most.
The terminations are the easy part even if its field terminations of MPTL, pulling the cable is what takes hours

>>105891991
camera
ap

>>105893946
thats 10 minutes bro

>>105891794 (OP)
It's pretty nice. Can power phones, CCTV, access points, etc. without needing an AC outlet nearby. Garden variety PoE is a bit underpowered, though. Only 15W which won't be enough for large access points or big ass cameras with lots of infrared lights and fancy event detection AI models running on them. I make sure to have PoE+ gear everywhere since that can provide up to 30W.

>>105892121
>Depends on the switch but quality hardware negotiates.
Even cheap chinesium does as far as switches are concerned. What doesn't negotiate is "passive PoE" injectors that just put 9-12V DC on the wire without even asking. These sometimes come with cheap access points. I hate that shit because you need to carefully check the vendor data sheet to figure out that these APs advertised as PoE can't into actual PoE. For "passive PoE" usually means the device in question isn't capable of negotiating PoE with a proper PoE switch either so you'll always need the stupid proprietary injector.

>But one 48port also costs 7000€.
You fell for the enterprise jew then. You can get 48 PoE+ ports a lot cheaper than that. But then you probably got it for various other features anyway, with PoE being more of a side benefit.

>>105892674
>I am looking for a quality 16 port PoE+ switch. Any suggestions?
Shit thing to be looking for. There's some sort of weird gap between 10 port (8x PoE, 2x SFP) and 26 port (24x PoE, 2x SFP) PoE switches. Anything in between is a lot more expensive per port than you'd expect. If you don't need anything special get a 26 port D-Link. They're cheap and decent enough for basic use.

>>105893946
3h is a bit much. I use 20 minutes per keystone to calculate my quotes. That includes labeling and continuity testing, and occasionally running back to the van because you forgot to bring enough keystones, the label printer or a termination dongle for the continuity tester. Also, use the right keystones. Some come with a tool that presses the wire sorting comb onto the IDC connectors before you close the keystone. Ever since I started using these, I stopped having open connections.

Also, knowing you regularly make people who previously only knew horrible wifi at -79dB very happy, helps.

>>105895327
>The terminations are the easy part even if its field terminations of MPTL, pulling the cable is what takes hours
This. I usually offer my customers to terminate cable they pulled themselves. If they encounter tight spots they can't get the cable through, I'll do the fishing.

>>105895913
>These sometimes come with cheap access points.
It's funny because the UBIQUITI EDGEROUTER comes with 24V passive POE and I almost killed it.

>>105891794 (OP)
>ctrl-f
>no "access control"
PoE provides power to most access control (badge in, badge out, request-to-exit).
Pic rel are everywhere
>PoE for power and connectivity
>door stuff wired to the board

>>105896815
Maybe that's because you're confusing "what's the usecase" with "what's the catch". Everyone already know what the use case is.