RJ45 Manual Switch 4 Port Box RJ45 Manual Switchbox - CNC Specialty Store
4 Port 10/100/1000 RJ45 to Fiber Switch - Singlemode/Multimode - Accepts (x2) SFP Tranceiver Modules | Fibertronics, Inc.
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
Sfp Fiber Media Converter Rj45 Gigabit | Gigabit Ethernet Fiber Media Converter - Fiber Optic Equipment - Aliexpress
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