10/100/1000m 4 Port Gigabit Ethernet Switch Pcba For Embedded Integrated Module Dc 5v 12v1a-3a In Dc Out Vlan Through Current - Iot Accessories - AliExpress
Amazon.com: Throncom Industrial Gigabit 4 Ports Ethernet Switch Hardened 10/100/1000Mbps Fiber Switch with 100/1000M Adaptive SFP Slot Din Rail /Wall Mount Unmanaged Network Switch 12-48V DC 5-Port Switch : Electronics
Amazon.com: Mini Industrial 4 Port 10/100/1000Mbps Gigabit Ethernet POE + Switch with SFP Port Din Rail/Wall-Mount 4 Port 10/100/1000BASE-T RJ45 + 1 Port 100/1000FX (SFP) Support 12-48V DC : Electronics
IBM BladeCenter 4-Port Gigabit Ethernet Switch 13N2285 OS-CIGESM-18TT-EBU – Z – Garland Computers
MokerLink 4 Port PoE Switch with 2 Uplink Ethernet Port, 78W High Power, Support | eBay