3 port Gigabit switch module is widely used in LED line 5 port 10/100/1000 m contact port mini switch module PCBA Motherboard|Network Switches| - AliExpress
Amazon.com: CENTROPOWER 3 Port Outdoor POE Switch/Extender/Booster, 30W 48V 10/100/1000Mbps POE Passthrough Switch,Comply with IEEE 802.3af/802.3at : Electronics
Switch PoE XPOE-3-11 3-PORT ATTE - PoE Switches with 8 Ports support - Delta
Linksys SE3005 5-Port Gigabit Ethernet Switch | Linksys: US