DC/DC Off Board PoE are off board / external devices (DC input Voltage) that provides both voltage and current along with data over Ethernet cabling.
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Laird Technologies offers 8W, 12V out DC/DC PoE converters.
Pricing and Availability
Phihong offers 8.25W ~ 75W with 3V ~ 56V out DC/DC PoE converters.
SL Power Electronics offers a 24V, 11.4W out PoE DC/DC converter is also available.