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Does an active POE device support passive POE power supply

 It depends on the specific devices in question and their power requirements.

Active PoE (Power over Ethernet) devices use IEEE 802.3af or 802.3at standards to negotiate and provide power over Ethernet cables, while Passive PoE devices use a different method to supply power over Ethernet cables.

In general, Active PoE devices may not support Passive PoE power supply, as they are designed to work with the IEEE standards and may not be compatible with the different voltage and power levels used by Passive PoE devices. However, some Active PoE devices may have a built-in capability to detect and support Passive PoE power supplies, but it is not guaranteed.

Active PoE devices and Passive PoE devices use different methods to supply power over Ethernet cables, and they are not always compatible. Here are some additional details on the two types of PoE:

  • Active PoE devices comply with IEEE 802.3af or 802.3at standards, which define the voltage, current, and power levels that can be transmitted over Ethernet cables. Active PoE devices negotiate with the PoE switch or injector to determine the appropriate power level and ensure that the device receives the correct voltage and current to operate.
  • Passive PoE devices do not use the IEEE standards and instead use a fixed voltage and current level to supply power over Ethernet cables. Typically, Passive PoE devices supply power using two wires in the Ethernet cable, while data is transmitted over the other two wires. Passive PoE devices are not standardized, and the voltage and current levels used can vary between devices.

Some Active PoE devices may have a feature called "passive PoE support," which allows them to work with Passive PoE power supplies. This feature is not guaranteed, and compatibility depends on the specific device's design. If you are unsure whether a particular Active PoE device supports Passive PoE, you should check the device's documentation or contact the manufacturer for guidance.

It is essential to ensure compatibility between PoE devices before attempting to use them together. Using an incompatible power supply can damage the device or cause it to malfunction. If you are unsure whether two PoE devices are compatible, you should consult the documentation or contact the manufacturer for guidance.

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