Switch w/o power adapter

[FatBeats]

Hello,
I'm looking for a Switch (4+1) without the power adapter.
Is there anything powered by Ethernet?

Thanks!

[deanwebb]

Yes, I searched for "switch without power" and this was the first result:

https://www.amazon.com/TP-Link-5-Port-Gigabit-Network-Switch/dp/B0863M7C1L

Look at the picture of the back side, no power hole milled out... it's all powered over ethernet from the parent switch.

Switches without power adapters by and large are unmanaged "dumb" switches, so do not expect any features other than raw switching of packets.

[FatBeats]

thanks for your feedback!

I found out this video on Youtube: https://www.youtube.com/watch?v=nAjZPm6OUhY&t=186s (set the seconds on which you can see the right frame) where, unfortunately, this switch is powered by an adapter (on the right side). 

Anyway, if it was without the adapter, it was definitely PERFECT: right dimensions, right number of ports, no need of specific featues...

I decided to post here as it seems that is not that easy to find a device like the one I need, I actually didn't expect to meet these difficulties on this.

Many thanks, in advance, in case you could help again on this matter.

Regards!
Daniele

[deanwebb]

Aw, nuts... well, that image wasn't in the Amazon thingy... bummer...

I do know that hard phones are frequently PoE and have additional pass-through ethernet ports, but those aren't switches in the true sense of the word.

Here's an entry from Netgear: https://kb.netgear.com/28370/PoE-pass-through-switches

And here's the list of Amazon gear: https://www.amazon.com/poe-passthrough-switch/s?k=poe+passthrough+switch

The terminology you want is "PoE Passthrough Switch", that will find what you're looking for!

[FatBeats]

Good, thanks for this hint!

So, it should get power from my modem/router (does it need to be a specific device, for powering the "PoE passthrough switch"?), and the act as a switch for connecting the other devices to my home network.
Is it right?

Thanks again!

[Dieselboy]

Things like this aren't that common and I've had plenty of use cases in the past. I think cisco did a switch powered over POE.some time back.

I did once find a powerline plug that provided POE and there literally was only 1 from all my Google searches. It might have been TP-Link. It might have been USA 110v also which is why I couldn't get it.

Powerline allows you to send ethernet over the mains power cabling. Powerline plugs can have a 4-port switch on the side of it. But they rarely send out power over the ethernet cable. In my case I wanted a powerline plug to extend the ethernet network and subsequently power a POE phone. Because otherwise to do that would need two power adaptors and a network cable and switch but with the Poe powerline I could have used just the one Ethernet cable for everything.

Powerline works by getting a pair of powerline plugs connected to the mains. Then you can extend a wired network like: router-powerline1---mains power cabling ----powerline2---wired computer

OP would a wall-plugged 4-port switch do the job?
If you don't need 4 ports, but need 3 or less then you could just buy the one powerline plug, plug it into the mains and then just use the switch on it as a switch. You'd need one of the ports to connect to the router or switch but you'll have 3 spare ports.

[FatBeats]

Many thanks all for your help!

Specifying my use-case will definitely help understanding the scenario.
During the renovation work at home, almost all the ethernet cables were addressed to the same electrical box (wall mounted). Which is placed in a different zone than where the modem/router is located.

I need a device without power adapter basically because i do not have electrical cables within the electrical box where these ethernet cables arrive.
This device will be place into the wall (inside the box) for extending my home network. Otherwise there is no way for these cables to be physically connected to the network (and the wi-fi can't reach each rooms with sufficient bandwidth, despite I've a fiber 1000 Megabit/s connected to the modem/router).

In the mentioned electrical box I have: 1 cable coming from the modem/router, and 4 cables coming from different rooms (4+1).
A device 3+1 will solve the situation (I can configure one of the television with Wi-Fi with acceptable results), if a 4+1 is not available.

so, for the sake of clarity:

- switch to be put inside an electrical box (without electric power), so that nothing is visible outside
- it is needed to connect 4 devices through this switch, to the modem/router (if not existing: 3+1 would be OK)
- the goal is extending the home network (via cable)

Thanks again!!

PS. Maybe the solution found by deanwebb (PoE passthrough switch) will solve? The doubt here is that my modem/router is not able to PoE this passthrough switch.

[deanwebb]

You would then need an intermediary PoE provider switch that would put out the PoE to the passthrough device.

[FatBeats]

Hello,
I just wanted to confirm that I solved the case with the help of your suggestions.

I got a "PoE injector" and a "PoE pass-through" and everything is working as expected (with around 60 €).

PoE injector: https://www.amazon.it/dp/B016PYKX3S?psc=1&ref=ppx_yo2ov_dt_b_product_details
PoE pass-through: https://www.amazon.it/dp/B08VDWSHFL?psc=1&ref=ppx_yo2ov_dt_b_product_details

Many thanks!
Daniele

[icecream-guy]

 

[deanwebb]

Hello,
I just wanted to confirm that I solved the case with the help of your suggestions.

I got a "PoE injector" and a "PoE pass-through" and everything is working as expected (with around 60 €).

PoE injector: https://www.amazon.it/dp/B016PYKX3S?psc=1&ref=ppx_yo2ov_dt_b_product_details
PoE pass-through: https://www.amazon.it/dp/B08VDWSHFL?psc=1&ref=ppx_yo2ov_dt_b_product_details

Many thanks!
Daniele