OEM factory direct mini fast 10 / 100mbps 3-port Ethernet network lan hub switch board two-layer pcb 3 rj45 5V 12V head port
GigaBlox - Tiny GigaBit Ethernet Switch from BotBlox on Tindie
Amazon.com: 3 Channel Passive POE Switch/Extender,1 Input Port and 2 Output Ports,up to 100m/330ft Ethernet Over Copper Wire,IEEE 802.3af/at, Plug and Play : Electronics