4 port Gigabit PoE Injector with 44~57VDC Input and 802.3at 35W Per Port output, MIT-44GD - MSTronic Co. Ltd.
Passive Gigabit PoE Injector, 4 port (POE-INJ-4-G) - The source for WiFi products at best prices in UK - wifi-stock.co.uk
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
Hot Sale 4port Gigabit Poe Injector Midspan 24v 48v Operation Mode B For Ip Camera, Mikrotik And Other Networking Devices - Transmission & Cables - AliExpress
AT-4 Active Gigabit PoE+ Injector IEEE802.3at Mode A Power Over Ethern – poe -world
4-Port 802.3 af/at PoE Injector - Gigabit, LED
4 port AC/DC Gigabit PoE Injector with 48V 0.35A per port and surge protection, 802.3af compliant, MIT-4X48G-B1NN - MSTronic Co. Ltd.
12-48V 4 Port POE Power Supply Module Adapter,4 Port PoE Ethernet Power Supply Injector, Gigabit Ethernet PoE Ethernet Desktop Switch for IP Camera, Compatible with International Safety Standards: Amazon.co.uk: Computers & Accessories