Fast Ethernet Media Converters

Explore our range of Fast Ethernet Media Converters, including 10/100M media converters, fiber to ethernet converters, and industrial media converters. Designed for security communications and PoE applications, these devices ensure reliable data transmission. Wanglink factory-direct solutions offer robust performance and cost-effective options for your network infrastructure.

Explore All Fast Ethernet Media Converters

Unmanaged Fast Ethernet Fiber Media Converter Single Mode, 3 RJ45 Ports, 2 SC/ST/FC Fiber Ports, 100Mbps for Long Distance Transmission

Extend network up to 120km with this single-mode fiber media converter. 3 RJ45 + 2 fiber ports, auto-negotiation, low power, stable performance for ISP, surveillance, and campus networks.

CF203
Port Description

3 x 10/100Mbps RJ45 ports (auto-MDI/MDIX, auto-negotiation), 2 x 100BASE-FX fiber ports (SC/ST/FC connector options for multi-mode or single-mode).
  • Extends network up to 120km using single-mode fiber, ideal for long-distance links between buildings or remote sites.
  • Three 10/100Mbps auto-negotiating RJ45 ports for connecting multiple end devices or creating a mini edge switch.
  • Dual fiber ports allow backup path or conversion between multi-mode and single-mode optics without extra hardware.
  • Low power draw of 3.5W keeps operating costs down and reduces heat in enclosed spaces.
  • Wide operating temperature range (-40°C to 70°C) suits outdoor cabinets, factories, and harsh environments.
  • Built-in QoS prioritizes VoIP and video traffic, ensuring clear calls and smooth surveillance feeds.
  • Supports STP for building redundant network topologies without loops.









Why This Single Mode Fiber Media Converter Works for Real-World Deployments

If you’re tired of copper’s 100-meter limit and need to run Ethernet across a campus, between buildings, or along a highway, the CF203 is a straightforward solution. It’s a fiber media converter single mode that takes three 10/100Mbps twisted-pair ports and bridges them onto a 100BASE-FX fiber link – with the flexibility of a second fiber port for backup or multi-mode/single-mode conversion. You don’t need a degree in networking to set it up: plug in your Cat5 cables, connect the fiber, and let auto-negotiation handle speed and duplex. The built-in switching core keeps traffic flowing by cutting down broadcast noise, while QoS gives priority to VoIP calls so your office phone system doesn’t stutter. For IT admins managing legacy 10Mbps devices alongside newer 100Mbps gear, the auto-sensing ports make upgrades painless – no manual configuration required.

What sets this single mode fiber optic media converter apart is its temperature tolerance. Rated from -40°C to 70°C, it’s been deployed in outdoor cabinets, unventilated industrial enclosures, and desert surveillance posts without hiccups. The external DC5V adapter means if the power supply fails, you swap it in seconds instead of replacing the whole unit. And because it consumes only 3.5W, you won’t worry about heat buildup or high electricity bills when running 24/7.

Typical users include small ISPs extending fiber to a remote office, security integrators linking IP cameras over a kilometer apart, and facility managers connecting two buildings without trenching for copper. The CF203 also supports VLAN oversized frames (up to 1522 bytes), so it plays nicely with managed switches that tag traffic. STP (Spanning Tree Protocol) is supported too, meaning you can build a redundant ring and the converter will sort out the loop.

In short, this fiber media converter single mode gives you the distance and reliability of fiber without the complexity of a managed device. If your job is to make networks reach farther and stay stable, this is a tool you’ll keep in your kit.

Access Method 10/100Mbps
Standards IEEE802.3 10Base-T, IEEE802.3u 100Base-TX/FX, IEEE802.3x Flow Control, IEEE802.1q VLAN, IEEE802.1p QoS, IEEE802.1d Spanning Tree
Wavelength 850nm / 1310nm / 1550nm
Transmission Distance Multi-mode: 2 km; Single-mode: 20~120 km; Cat5: 100 m
Fiber Ports 2 x SC/ST/FC (multi-mode: 50/62.5/125µm; single-mode: 9/125µm)
RJ45 Ports 3 x 10/100Mbps, auto-MDI/MDIX, auto-negotiation
MAC Address Table 1K
Flow Control Full-duplex: IEEE802.3x; Half-duplex: back pressure
LED Indicators PWR, FX LINK/ACT, FX SPD, TP1/2 LINK/ACT, TP1/2 SPD
Power DC 5V 2A (external adapter)
Power Consumption 3.5W
Operating Temperature -40°C ~ 70°C
Operating Humidity 5% ~ 90% (non-condensing)
Storage Humidity 5% ~ 90% (non-condensing)
Dimensions 100 x 78 x 25 mm
Weight ~0.3 kg (unit only)


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