[SOLVED] Are inline POE power extractors legit?

nostob

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Nov 1, 2009
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I have a com device that is not POE. For simpler (and UPS) installation I am thinking about using a POE power extractor. But for the most part I am not finding any brand products. Therefore, my question: are those devices not comply with POE standard, is it safe?

for example:
https://www.amazon.com/DSLRKIT-Splitter-Ethernet-Compliant-IEEE802-3af/dp/B01DOSOCEE/ref=pd_lpo_1?pd_rd_i=B01DOSOCEE&psc=1


M y power supply I like to replace:
5V 2A (but uses really only 4.1W)
3.8x1.35mm
Inside Positive (+) Outside Negative (-)
Barrel Length 6.9mm
 
Solution
thanks. I should have mentioned that I also need Ethernet. Thanks for pointing out the certification. Such devices are very practical, but I am concerned whether this was intended use of POE. Doesn't seem any of the typical brands make one.
I have seen the POE Texas for other devices. The fact that they have an actual website -- https://www.poetexas.com/ makes me a little more comfortable.
I have their POE detector -- https://shop.poetexas.com/collections/tools-and-accessories/products/poe-detector

kanewolf

Titan
Moderator
I have a com device that is not POE. For simpler (and UPS) installation I am thinking about using a POE power extractor. But for the most part I am not finding any brand products. Therefore, my question: are those devices not comply with POE standard, is it safe?

for example:
https://www.amazon.com/DSLRKIT-Splitter-Ethernet-Compliant-IEEE802-3af/dp/B01DOSOCEE/ref=pd_lpo_1?pd_rd_i=B01DOSOCEE&psc=1

My power supply I like to replace:
5V 2A (but uses really only 4.1W)
3.8x1.35mm
Inside Positive (+) Outside Negative (-)
Barrel Length 6.9mm
You really should use "standard" POE of 48VDC. The wire guage in ethernet cable can't carry 5VDC at any amperage. Ubiquiti makes a POE to USB adapter -- https://store.ui.com/collections/operator-accessories/products/instant-802-3af-to-usb-adaptor
 
Last edited:

nostob

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Nov 1, 2009
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You really should use "standard" POE of 48VDC. The wire guage in ethernet cable can't carry 5VDC at any amperage. Ubiquiti makes a POE to USB adapter --https://store.ui.com/collections/operator-accessories/products/instant-802-3af-to-usb-adaptor
thanks. I thought the type I found is still 48VDC, but hen converts 48 to 5DC in the adapter. Wouldn't I loose the Ethernet to go to device with the Ubiquiti?
 

kanewolf

Titan
Moderator
thanks. I thought the type I found is still 48VDC, but hen converts 48 to 5DC in the adapter. Wouldn't I loose the Ethernet to go to device with the Ubiquiti?
That specific one, Yes, it is strictly for power. You didn't say you wanted ethernet also.
The original device you linked says it is standard POE compatible (802.3af). The one thing I don't like about your original component is it does not show the certification side.
This device -- https://www.amazon.com/GAF-5v10w-802-3af-PoE-Splitter-Output/dp/B0167JHY3I?th=1 Does at least show that. It is also gigabit rather than 100Mbit.
 

nostob

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Nov 1, 2009
80
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thanks. I should have mentioned that I also need Ethernet. Thanks for pointing out the certification. Such devices are very practical, but I am concerned whether this was intended use of POE. Doesn't seem any of the typical brands make one.
 

kanewolf

Titan
Moderator
thanks. I should have mentioned that I also need Ethernet. Thanks for pointing out the certification. Such devices are very practical, but I am concerned whether this was intended use of POE. Doesn't seem any of the typical brands make one.
I have seen the POE Texas for other devices. The fact that they have an actual website -- https://www.poetexas.com/ makes me a little more comfortable.
I have their POE detector -- https://shop.poetexas.com/collections/tools-and-accessories/products/poe-detector
 
Solution