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Questions tagged [power-over-ethernet]

Sending power over the ethernet cable on devices compliant for the IEEE802.3af or IEEE802.3at standards.

68 questions
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5 answers

Can I connect a PC to a PoE switch?

I have a switch with Power over Ethernet capabilities. Is it allowed to connect a PC to a PoE switch?
Kicsi Mano
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Power-over-ethernet to non-PoE device

While I can find lots of information about PoE, I'm finding little about "gotchas" or "warnings". That being said, what would happen if I configured a switch to give PoE then plugged that into a device that doesn't support PoE? Would it damage the…
user356950
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Can you run PoE Cat6 alongside standard Cat6 cables?

I need PoE for some devices (CCTV cameras, WiFI Access Points) - can these wires be run in parallel with Cat6 cables going to non PoE devices (e.g. datapoints of PC) Cat6 HDBaseT Cables being used for HDMI over Cat6
Steve
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8 answers

Do RJ45s need to be wired differently to enable POE (Power over ethernet)?

On larger projects we tend to buy CAT6 in drums of 1000ft, these are then run to the locations as required and RJ-45s placed on the ends by the electrician, this all works fine. Were now starting to use devices that have POE (power over Ethernet),…
sam
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Is it harmful to plug a POE energized data source into non-POE NIC card?

Some of our wired ethernet data connections are energized with Power Over Ethernet at 48 volts. But not all of our devices utilize POE. Is it harmful to plug a device into POE when the device's NIC does not utilize POE? I would like to use the…
steampowered
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3 answers

Can Power Over Ethernet be daisy chained?

I am planning a wireless network that will involve a wireless radio modem that must be mounted pretty far from my house on a post (Needs line of sight to work) and then getting the signal back over to the house using an outdoor wireless access…
JohnFx
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5 answers

Fix Ethernet 10/100 PoE cable with 7 out of 8 wires alive

I have a 10/100Base-T ethernet cable with PoE IEEE802.3at/af installed in my concrete walls. Unfortunately only 7 out of 8 wires are alive. Wire #6 (green) was broken during construction works and there is no way to replace the cable. Still, I would…
Nik
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3 answers

Can an outdoor ethernet cable be run underwater?

I'm using a Ubiquiti Nanobeam to connect my home's LAN to a dock around 800 feet away. The dock's Nanobeam will be mounted on an isolated piling that is 10 feet away from the rest of the dock and is in about 15 feet of water. So, the cable will be…
Ladinn
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4 answers

How many volts there are in PoE?

I noticed, that there is no clear notification about PoE voltage. For example, I bought TP-Link WA901ND WiFi AP, which is entitled as supporting PoE. There is no clear statement, on which voltage this PoE should be. Simultaneously, this AP is…
Dims
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Daisy chaining PoE switches for IP security camera system

I have a fairly large (for me) security camera system to install and the cost of cabling is keeping this project cost prohibitive. I'll outline what I'd like to do, and welcome comments on the feasibility. I have 13 apartment buildings that need to…
bill
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Can I use a power supply with more output amperage than the router needs?

For some reason when I connect a 5m Ethernet cable to my router it works. When I connect a 10m Ethernet cable it doesn’t work. Router AC Input: 12V, 2A Charger AC Intput: 12V, 2A Can I replace my old power supply with another power supply that…
Soufiyan
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Want wireless bridge which provides POE (power over Ethernet)

I have an IP camera in my mailbox with POE. I would like to connect this camera in to my Synology router, but I only have available 3 cables in my mailbox. Is there a wireless bridge which provides POE, so I could connect it like so: POE IP camera…
teamol
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Can I enable Power over Ethernet from a MacBook Pro?

I've recently gotten a Cisco IP telephone. I've an Macbook Pro (15", Late 2011): Is there any way to enable PoE to test my phone? Or do I have to buy an extra PoE injector just for this purpose?
Markus
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1 answer

802.3af PoE injector difference in Gigabit vs 10/100?

I have an EnGenius EAP350 Access Point that supports 802.3af PoE. After digging through the specs sheets online, I believe that the AP requires 48V@.375A when using POE. Currently I have the AP running directly on a power adapter, however I'd like…
вʀaᴎᴅᴏƞ вєнᴎєƞ
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Gateway set to unexpected PoE interface in ADSL modem

This issue came up during a routine check on my router/modem settings. Details follow. I use a TP-Link TD-W8901N ADSL modem (specs here) facing the internet. The modem manages a 192.168.1.x subnet, on which the only other device is a Belkin WiFi…
someonenoone
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