PoE++ 90watt 5 Port Gigabit PoE Passthrough Switch Outdoor Extender 802.3bt at

5 Port(1 PoE in - 4 PoE Out)Gigabit PoE Passthrough Switch. This product is a PoE Passthrough Switch, designed to operate by connecting its PoE IN port to a PoE-enabled switch or PoE injector. When connected, it works without the need for an external power adapter.

eBay