Product Overview
The OPTONE 5-Port Gigabit Ethernet to Fiber Media Converter / Switch (OPT-205 Series) is a compact, high-performance unmanaged networking device designed to bridge multiple copper Ethernet devices over long-distance fiber optic links. Equipped with four 10/100/1000Base-TX RJ45 ports and one 1000Base-FX fiber port, this versatile unit allows up to four local wired devices to share a single fiber uplink.
Engineered for reliable operation in harsh or quiet environments, the OPT-205 series features a fanless natural cooling design, a 2K MAC address table, 1Mbit packet buffer, and support for 10K-byte jumbo frames. Available in a wide variety of configurations—including multi-mode, single-mode, Bi-Directional (WDM single-fiber), and a flexible SFP slot variant—it delivers unmatched flexibility for industrial security, FTTx deployments, and enterprise edge extensions.
Key Features & Benefits
Compact 5-Port Hybrid Design: Combines 4 x Gigabit RJ45 ports for local device connections with 1 x Gigabit fiber port for long-distance uplinks.
Flexible Optical Configurations: Available with fixed connectors (SC, ST, or FC) for Multi-Mode, Single-Mode, Bi-Directional (WDM), or an SFP slot option (OPT-205) for ultimate modularity.
Long-Distance Reach: Effectively extends network boundaries from 500m (Multi-mode) all the way up to 120km (Single-mode) over fiber optic infrastructure.
Fanless Natural Cooling: Operates completely silently with a reliable fanless thermal design, ensuring high stability and lower maintenance in enclosed or noise-sensitive environments.
High-Performance Packet Handling: Built with a 2K MAC table, 1Mbit packet buffer, and support for 10K-byte jumbo frames to optimize data throughput.
Plug-and-Play Simplicity: Fully unmanaged with auto-negotiation, auto-MDI/MDIX crossover, and dynamic LED indicators for instant, zero-configuration deployment.
Technical Specifications
| Category | Specification Details |
|---|---|
| Ethernet Ports (Copper) | 4 x 10/100/1000Base-TX (RJ45) | Auto-negotiation, Auto MDI/MDI-X |
| Optical Port (Fiber) | 1 x 1000Base-FX (1×9 fixed connector or SFP slot) |
| Standards Compliance | IEEE 802.3 (10Base-T), IEEE 802.3u (100Base-TX/FX), IEEE 802.3ab (1000Base-T), IEEE 802.3z (1000Base-SX/LX) |
| Switch Properties | MAC Table: 2K | Packet Buffer: 1Mbit | Switching Delay: < 5µs | Jumbo Frame: 10K bytes |
| Fiber Core & Distance | Single-mode (9/125µm) up to 120km | Multi-mode (50/ & 62.5/125µm) up to 0.5km |
| LED Indicators | Power Status, Speed, FX Link/Act, TX Link/Act |
| Power Requirement | Input: 12V DC (External AC-to-DC power adapter included) |
| Dimensions & Weight | 144 x 95 x 32 mm (L x W x H) | Weight: 0.31 kg |
| Housing Material | Rugged Metal Enclosure (Fanless Design) |
| Environmental Limits | Operating Temp: -10°C to 70°C | Storage Temp: -20°C to 70°C | Humidity: 10% to 90% RH (Non-condensing) |
| Reliability | 3-Year Warranty |
Ordering Information & Model Selection
Main Switch / Converter Models
| Part Number | Description/Fiber Mode | Max Distance | Optical Connector |
|---|---|---|---|
| OPT-205M05 | 4*RJ45 to Multi-Mode Fiber | 0.5 km | SC, ST, or FC optional |
| OPT-205S20 | 4*RJ45 to Single-Mode Fiber | 20 km | SC, ST, or FC optional |
| OPT-205S40 | 4*RJ45 to Single-Mode Fiber | 40 km | SC, ST, or FC optional |
| OPT-205S80 | 4*RJ45 to Single-Mode Fiber | 80 km | SC, ST, or FC optional |
| OPT-205W20 | 4*RJ45 to Bi-Directional (WDM) Single-Fiber | 20 km | SC, ST, or FC optional |
| OPT-205W40 | 4*RJ45 to Bi-Directional (WDM) Single-Fiber | 40 km | SC, ST, or FC optional |
| OPT-205W80 | 4*RJ45 to Bi-Directional (WDM) Single-Fiber | 80 km | SC, ST, or FC optional |
| OPT-205 | 4RJ45 to 1GE SFP Slot (Modular) | Depends on SFP | LC (via SFP module) |
Optional SFP Transceivers (Exclusive for OPT-205 Model)
| Part Number | Data Rate | Wavelength | Fiber Mode | Max Distance | Connector |
|---|---|---|---|---|---|
| SFP-SX-MM-0205 | 1.25G | 850nm | Multi-Mode (MMF) | 0.5 km | LC |
| SFP-LX-SM-0220 | 1.25G | 1310nm | Single-Mode (SMF) | 20 km | LC |
| SFP-LX-SM-0240 | 1.25G | 1310nm | Single-Mode (SMF) | 40 km | LC |
| SFP-ZX-SM-0280 | 1.25G | 1550nm | Single-Mode (SMF) | 80 km | LC |
Frequently Asked Questions (FAQ)
Q1: What is the difference between standard single-mode models and Bi-Directional (WDM) models like the OPT-205W20?
Standard single-mode models (such as OPT-205S20) require two fiber cores (one for transmitting, one for receiving). Bi-Directional WDM models (such as OPT-205W20) transmit and receive data over a single fiber core using different wavelengths (e.g., 1310nm and 1550nm), cutting fiber cabling costs in half.
Q2: Should I choose a fixed optical connector model or the OPT-205 SFP model?
Choose fixed connector models (SC/ST/FC) if you have a pre-determined fiber cable type and distance and want a ready-to-use solution out of the box. Choose the OPT-205 SFP model if you prefer modular flexibility, allowing you to swap out SFP transceivers depending on changing network distance requirements.
Q3: Does the OPT-205 series require any software setup or configuration?
No. The entire OPT-205 series is fully unmanaged with true plug-and-play operation. It automatically negotiates port speeds, duplex modes, and cable crossovers without requiring any IP addresses or software management.