Amazon.com: LEAGY 2 Ports Network Switch Splitter Selector Hub 2-in 1-Out or 1-in 2-Out 100M : Electronics
2 Port Ethernet Shield Arduino Hardware Compatible from Elsofgel on Tindie
Factory Direct Mini Fast 10/100/1000mbps 2 Port Ethernet Network Lan Hub Switch Board Two Layer Pcb 2 Rj45 1*2pin Head Port - Network Switches - AliExpress