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LC interface corresponding to the network card interface

Fiber and communications infrastructure knowledge brief Published 09 Oct 2025

Prepared for preliminary research by the ROGER FIBRE knowledge desk. Confirm optical interfaces, port or core capacity, electrical input and output, enclosure protection, thermal design and installation limits against current standards and product documentation.

A Network Card with an LC interface is a fiber-optic NIC that connects to a computer via PCIe and uses LC connectors for high-speed data transmission over fiber networks.

Overview

A Network Interface Card (NIC) with an LC interface is a hardware component that allows a computer to connect to a network using fiber-optic cables rather than traditional copper Ethernet.

The L

C (Lucent Connector) is a small form-factor fiber connector commonly used in multimode or single-mode fiber networks for high-density installations and reliable connections.

These NI

Cs are often used in environments requiring high bandwidth, low latency, and electromagnetic interference resistance, such as data centers, industrial applications, and secure government networks.

Key Features

Data Rate: Typically supports Gigabit Ethernet (1000 Mbps), with some models capable of higher speeds depending on the chipset and fiber type. Fiber Type: Most LC NICs support multimode fiber (MMF) at 850 nm) with ranges up to 550 meters, while single-mode fiber (SMF) versions can reach several kilometers. Interface: Connects via PCIe x1 or x4 slots, compatible with modern motherboards.

Advanced Networking Features: Many cards support VLAN tagging (802. 1Q/P), jumbo frames, TCP/UDP checksum offload, IPv6, and energy-efficient Ethernet (802. 3az).

Resilience and Redundancy: Some NICs support Link Aggregation (LACP), failover, and trunking, enhancing network reliability. Use CasesHigh-Density Racks: LC connectors are compact, making them ideal for dense server racks. Industrial and Noisy Environments: Fiber NICs are resistant to electromagnetic interference, suitable for industrial applications.

Secure Networks: Often deployed in government or enterprise networks requiring secure, high-speed connections. Data Centers: Used to connect servers to fiber switches for high-throughput applications.

Considerations

Compatibility: Ensure the NIC is compatible with your operating system and motherboard PCIe slot. Fiber Type Matching: Match the NIC's fiber type (multimode or single-mode) with your existing network infrastructure. Form Factor: Low-profile NICs are available for compact systems or blade servers.

In summary, an LC interface network card is a fiber-optic NIC designed for high-speed, reliable network connections, particularly in environments where performance, density, and interference resistance are critical. These cards are widely used in enterprise, industrial, and data center networks.

LC interface corresponding to the network card interface - ROGER FIBRE ATELIER [PDF]

LC interface corresponding to the network card interface

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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