Is this 802.3at or 802.3af compliant? It says one thing in the description and another in the product page.

The description says it's compatible with both. What the description says is that it does not include the 802af/802.at compliant detection feature meaning it will supply power over CAT5 and therefore not recommended to be connected to non-POE ports as it may damage those devices.

Is this device active or inactive?

I would assume it is active since it provides constant power from POE port to any device you plug 8nto it.

Does it work with 802.3at only device like ubiquiti uap-ac access point?

I tried it with a Ubiquiti U6-LR-US and it did not work. It didn't burn anything out, thankfully, and the light powered on but it just continued to rapidly blink, it did not proceed.

for amcrest ip4m-1055e?

The camera is specified to be 12v POE 802.3af. This POE supply is 892.3af/at compliant and i don't see a reason why this would not be compatible but you may want to inquire with the manufacturer if you are not sure.

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power Up Your Network with Ease!

SAFETY FIRST - Designed to prevent damage by ensuring only compatible devices receive power.
POWER YOUR NETWORK - Effortlessly inject power into your devices without extra adapters.
SEAMLESS CONNECTIVITY - Enjoy lightning-fast 10/100/1000Mbps gigabit ethernet connection.
UNIVERSAL COMPATIBILITY - Works with all 802.3af PoE devices like IP phones and cameras.
PLUG AND PLAY CONVENIENCE - Simply connect and power up—no complex setup required.

The Gigabit 48V 30W PoE Injector Adapter is a powerful solution for powering 802.3af compatible devices like IP phones and cameras. With a seamless gigabit ethernet connection and plug-and-play convenience, this adapter ensures your devices stay powered without the hassle of additional adapters.

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