4-Port Gigabit Ethernet to USB3.1 Gen1 Adapter w/Mounting Kit
4-Port 10/100/1000Base-T to 2-Port SFP Fiber Media Converter | Optcore
Amazon.com: Cable Matters USB to 4-Port Gigabit Ethernet Switch for Network Sharing with TV, Laptop, Gaming Console (USB Ethernet Splitter, USB Network Switch, USB to Ethernet Adapter, USB Gigabit Switch) : Electronics
StarTech.com 4 Port Gigabit Power over Ethernet PCIe Network Card - PSE / PoE PCI Express NIC - Add 4 Gigabit Power over Ethernet ports to a PCI Express-enabled computer - 4
4 Port 2.5 Gigabit Ethernet PCIe x1 Network Card NIC Realtek RTL8125 Chipset | eBay
Amazon.com: HINYSENO 4 Port RJ-45 10/100/1000Mbps PCI-Express x 4 Gigabit Ethernet Server Adapter Quad-Port Network Interface Controller Card for Intel 82576 Chipset, Compare to Intel 82576 : Electronics
4-port PoE Gigabit Ethernet Switch - Dahua Technology USA Inc
Amazon.com: Mini Industrial 4 Port 10/100/1000Mbps Gigabit Ethernet Switch with SFP Din Rail/Wall-Mount 10/100/1000BASE-T RJ45 + 1 100/1000FX (SFP) Support 12-48V DC 10Gbps Switching Capacity : Electronics
Gigabit Ethernet Switch with 4 SFP Ports and 2 10/100/1000Mbps Ethernet Ports, Unmanaged Plug & Play, Robust Metal (4 SFP Ports) (Ref:7526) – Elfcam - Fiber Solution Specialist