Recommended PoE Standards

Recommendations for the proper use of PoE standards on ProDVX devices

At ProDVX we want to ensure that our partners can create a power provisioning environment for ProDVX branded products to work properly. Hence why we have created the following guidelines on powering our devices via third party PoE equipment.

Although some of our devices can work with the PoE standard known as IEEE 802.3af, we advise the use of the IEEE 802.3at (also known as PoE+) standard on ProDVX devices that are equal to or smaller than 15 inch in size. For our devices larger than 15 inches we advise the use of the IEEE 802.3bt standard (PoE++). This also means that the settings on intelligently managed devices should push for these standards. For example, on HPE Aruba (and similar equipment) the “high power” setting should be used. Furthermore, ProDVX advises the use of the “user settings”, instead of “class determination” for the power provision. These settings ensure a static power provision of up to 25W for the IEEE 802.3at standard, and 55W for the IEEE 802.3bt standard.

Please be aware that the total available PoE budget on the switch should not exceed the amount of power that the connected devices require from the switch. For example, 10 devices that use the IEEE 802.3at standard (up to 25W) require a powered switch with (at least) 250W of available PoE budget. 

In order to verify whether the above stated power provisioning guidelines are met, we ask you to always check the following points:

  • What brand/type of PoE switch is used.
  • IEEE802.3af/at/bt.
  • LLDP/CDP support.
  • Amount of ports and total power budget.
  • How many displays and other equipment are powered via the same switch.
  • Type of display/expected power consumption.
  • Power consumption of third party equipment.
  • Power distribution over VLAN(‘s).
  • Power distribution settings.
  • Static (user settings) power configuration on the ports where the displays are connected to.

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