REVODATA Micro USB PoE Splitter 5V 2.4A Output, IEEE 802.3af Standard 10,100Mbps for USB Charging Cable RJ45 Port Power Over Ethernet USB Splitter Connector (USB0502 Black)

Works great, have tested this with a couple of 12v devices and powered from an Ubiquiti POE Injector.I’ve used this to extend the length via network cable to the location I wanted.

Works as should, well built.

I ordered two to power a pair of Asus tinkerboards from my PoE switch and haven't had any problems so far.

Just what you need for helium

As per the description these connect at 100Mbps and provide 5V via a micro USB socket - ideal for the Pi 3's, for example. There is enough free play in the cables that you can take the splitter body to the rear of the Pi and fix them together with a cable tie if you are trying to keep a clean installation. These adaptors come into their own in temporary applications such as testing, or if you cannot use an internal PoE solution (eg the official Rasberry Pi PoE HAT). They can also be used in a number of other applications where power is usually supplied over a micro USB connector with an Ethernet port close by. Please note that gigabit versions do exist (eg for the Pi 4 that doesn't have the bandwidth resitrictions of the earlier Pis), search for DSLRKIT on Amazon for those.

Great value for money, does the job perfectly, it has help me able to set up the camera at a perfect position without the long length of power cable/transformer. Arrived very quickly too and packaged well as usual.