How Does PoE Output Work on Devices with Dual-Power Input?

poe
hd4

#1

Devices such as the MAX HD4, and the MAX HD2/4 with MediaFast accept dual DC input and support up to 8x 802.3at PoE ports. Here’s how it works:

If you plug in the first DC input, LAN ports 1-4 will offer PoE output. If you plug in both DC inputs all LAN ports (1-8) will offer PoE output.


#2

An additional note here is that you need to use 48VDC power supplies in order to get these PoE ports activated.


#3

Peplink’s partnumber for this 48V DC power supply is ACW-609. :smiley:


#5

Hello @Alan, @Tim_S & @Joey_van_der_Gaag,
Did you know you can also power these and deliver the required voltages to operate the PoE Function from a 12VDC or 24VDC Source? We have successfully used a high quality DC-DC converter to achieve this with Solar powered installations, though it would work just as well with mobile locations such motor vehicles and water based vessels.

We have been sourcing DC-DC converters from Powerbox Australia, you can see some of the selection at http://www.powerbox.com.au/dc-dc-converters/dc-dc-converter-eta-pbih.html, they ship internationally, and although the units are on the high side (in $) they have been designed for performance.

Happy to Help,
Marcus :slight_smile: