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4 Port Gigabit PoE Injector with 24 Volt 30 Watt Power Supply
Passive Gigabit PoE Injector, 4 port (POE-INJ-4-G) - The source for WiFi products at best prices in UK - wifi-stock.co.uk
Non-Controlled 4 Port 10/100 PoE Injector - PacketFlux Technologies
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AT-4 Active Gigabit PoE+ Injector IEEE802.3at Mode A Power Over Ethern – poe -world
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4 port Gigabit PoE Injector with 44~57VDC Input and 802.3at 35W Per Port output, MIT-44GD - MSTronic Co. Ltd.
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Amazon.com: PoE Texas 4 Port 24V Passive PoE Injector with 24V 30W UL/FCC Certified Power Supply - Gigabit Injector - Passive Power Over Ethernet Multi Port PoE Adapter for Ubiquiti, Mikrotik, 24