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
Amazon.com: RJ45 Ethernet Splitter Cable, Sartyee RJ45 Y Splitter Adapter 1 to 3 Port Ethernet Switch Adapter Cable for CAT 5/CAT 6 LAN Ethernet Socket Connector Adapter Cat5 Cat6 Cable - ONE
OEM factory direct mini fast 10 / 100mbps 3-port Ethernet network lan hub switch board two-layer pcb3 rj45 5V 12V head port - AliExpress
Fast switch mini 3 port ethernet switch 10 / 100mbps rj45 network switch hub pcb module board for system integration module - AliExpress
Intellinet 24-Port Gigabit Ethernet Switch (561273) – Intellinet Europe