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Fiber optic network card dual-port single-mode

Fiber optic network card dual-port single-mode

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Dual-port single-mode fiber NICs provide high-speed, long-distance connectivity for servers and workstations, supporting 10GbE, 25GbE, or higher speeds over single-mode fiber.

Overview

A dual-port single-mode fiber network interface card (NIC) is designed to connect a computer or server to a fiber optic network using single-mode fiber (SMF), which is optimized for long-distance transmission (up to 10 km or more) with minimal signal loss . Dual ports allow link aggregation, load balancing, or redundancy, improving throughput and fault tolerance .

Key Features

  • Speeds: Common options include 10GbE (SFP+), 25GbE (SFP28), and higher, depending on the NIC model .
  • Form Factor: PCIe cards, compatible with PCIe 3.0 or 4.0 slots; some require full-height or low-profile brackets .
  • Transceivers: Pluggable SFP+ or SFP28 modules; single-mode modules support long-range connections (up to 10 km for 10GbE, 10 km+ for 25GbE), .
  • Operating System Support: Most cards support Windows, Linux, and macOS (with appropriate drivers), .
  • Advanced Features: Offloading, SR-IOV, PTP, and SMB Multichannel support for enhanced performance and reduced latency .

Benefits of Dual-Port Single-Mode NICs

  1. Increased Bandwidth: Combining both ports can double throughput for high-demand applications .
  2. Redundancy: If one port or cable fails, the other maintains network connectivity .
  3. Long-Distance Connectivity: Single-mode fiber allows connections over kilometers, ideal for data centers or campus networks .
  4. Future-Proofing: Many dual-port NICs support both 10GbE and 25GbE, allowing upgrades without replacing the card .

Example Products

  • Sonnet Twin10G SFP28 PCIe Card: Dual-port 10GbE, supports single-mode fiber up to 10 km, SMB Multichannel, Windows/Linux/macOS compatible .
  • Sonnet Twin25G PCIe Card: Dual-port 25GbE, supports single-mode fiber, PCIe 3.0/4.0, Windows/Linux/macOS, allows link aggregation for 50Gb/s throughput .
  • StarTech 2-Port 10G Fiber NIC: Open SFP+ slots for single-mode or multimode transceivers, PCIe interface, enterprise-grade reliability .

Considerations for Selection

  • Distance Requirements: Choose single-mode modules for long distances; multimode is suitable for short-range (<500 m), .
  • PCIe Bandwidth: Ensure the host system's PCIe slot supports the NIC speed to avoid bottlenecks .
  • Cooling and Power: Dual-port high-speed NICs can generate heat; proper airflow and heatsinks are important .
  • Driver and OS Compatibility: Verify that drivers are available for your operating system and kernel version . Dual-port single-mode fiber NICs are ideal for high-performance computing, data centers, and enterprise networks where long-distance, high-speed, and reliable connectivity are critical. They provide flexibility, redundancy, and scalability for modern network infrastructures.
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