StarTech.com Gigabit Ethernet Copper-to-Fiber Media Converter - SM LC - 10 km Tested and working In used condition No cables included Sold as shown in photos Any questions please do ask Rack 19
eBay
Lenovo USB 3.0 Type C To RJ45 Wired 1000M Ethernet Adapter Card Connector For Computer Laptop Ultrabook MacBook Converter
Aliexpress UK
Connector: RJ45 Connector. Ethernet Port LED Indicators: Easy to see LED indicators provide status to easily monitor network activity. 1 x Converter. Colour: Black. Connector: SC Connector, Core: 8.3um, 8.7um, 9um, 10um On Single Mode Fiber.
eBay
Coaxial to Ethernet Adapter, 4 Pack Coax RF F Female to RJ45 Male Converter for Line Tester
Aliexpress UK
2 Fiber/Multimode: This ethernet switch converter has inbuilt 2 fiber/multimode module 850nm with SC port, and extend your 100M or fast Ethernet network up to 0.55km/0.34 miles. Auto negotiation: full/half duplex auto negotiation, MDI/MDIX auto crossover.
eBay
USB C to Ethernet Cable 1000Mbps 2 in 1 USB/Type-C to RJ45 Gigabit LAN High Speed Network Converter for Laptop PC Mobile Phone
Aliexpress UK
1 x Gigabit ethernet over fiber converter (A). 1 x Gigabit ethernet over fiber converter (B). Fiber Type: SC SMF, Single SC. Transmission distance: up to 20Km(12.4Miles). Fiber Port: 20KM SC transceiver included (1.25G, Single-mode, Wavelength 1310/1550nm).
eBay
RJ45 Ethernet Port Adapter Board 8P Vertical Horizontal Network Interface Converter PCB Test Terminal Board for Wiring
Aliexpress UK
10/100M optical port is full duplex mode ;Ethernet port 10/100M adaptive mode. Ethernet interface can adaptively direct line / crossover cable connection. Ethernet ports support full / half duplex mode.
eBay
1 IN 2 Network Splitter 1000Mbps RJ45 Adapter Gigabit Converter Internet Ethernet 8P8C Extender Plug Extension
Aliexpress UK
10/100 base-TX to 100 Base-FX
eBay
2500Mbps USB C Type-C Ethernet To RJ45 2.5G USB 3.0 Wired Adapter Converter Lan Network Hub For Windows 7/8/10 MAC For PC Laptop
Aliexpress UK
2 x Ethernet to fiber converter (A and B). And its high recognize ability with hot-swappable function so that it is easy for maintenance. Interface: RJ45-UTP, fiber SC (single mode). Type: Fiber optical transceiver.
eBay
IP Network to Coaxial Extender Transfer from Net Cable Transmission to Coax Line 500M Ethernet RJ45 Converter for CCTV camera
Aliexpress UK
eBay
Modbus serial port RS485 to Ethernet Converter server USR-TCP232-304 data transmission DHCP/DNS Supported
Aliexpress UK