3-port Gigabit switch module is widely used in LED line 5 port 10/100/1000 m contact port mini switch module PCBA Motherboard - AliExpress
Linksys SE3005 5-Port Gigabit Ethernet Switch | Linksys: US
Amazon.com: Mini Industrial 3 Port Gigabit PoE Switch with DC12V-48V to DC48V Voltage Booster Hardened RJ45 10/100/1000Mbps 802.3at 30W/Port Ethernet Switch Din Rail Mount Compatible with IP Camera VOIP Phone : Electronics