Huawei QSFP-40G-LX4-MM 40G QSFP+ LX4 Optical Transceiver Module

The Huawei QSFP-40G-LX4-MM is a high-performance 40G QSFP+ optical transceiver module designed for enterprise networks, cloud computing platforms, and high-density data center environments. Supporting 40GBASE-LX4 Ethernet standards, this module delivers reliable 40Gbps transmission over OM3 and OM4 multimode fiber up to 150 meters through a duplex LC interface.

Using advanced CWDM technology with four optical wavelengths, the QSFP-40G-LX4-MM provides stable long-distance multimode transmission while simplifying the migration from traditional 10G LC fiber infrastructures to 40G Ethernet networks. Compared with MPO-based SR4 modules, this solution allows enterprises to reuse existing LC cabling systems, significantly reducing upgrade costs and deployment complexity.

The module features low power consumption, hot-swappable capability, Digital Diagnostic Monitoring (DDM), and excellent compatibility with Huawei CloudEngine switches and other mainstream networking platforms.

Figure 1 shows the front panel of QSFP-40G-LX4-MM.

Provides stable and efficient 40Gbps data transmission for enterprise backbone networks and modern cloud data centers.

Uses standard duplex LC connectors instead of MPO/MTP interfaces, making deployment easier and more cost-effective.

Ideal for upgrading existing LC fiber infrastructures without replacing current cabling systems.

Utilizes four CWDM wavelengths to achieve efficient 40G optical transmission over multimode fiber.

Supports real-time monitoring of:

• Optical transmit power
• Optical receive power
• Voltage
• Temperature
• Laser bias current

Manufactured with strict quality control standards to ensure long-term stable network performance.

The QSFP-40G-LX4-MM is an excellent solution for enterprises that want to upgrade existing LC-based network infrastructures to 40G Ethernet without expensive fiber replacement projects.

• Enterprise core networks
• Cloud data centers
• Spine-leaf architecture
• Storage area networks
• High-performance computing (HPC)
• Data center interconnects
• Campus aggregation networks
• 40G Ethernet switching systems

• High compatibility with Huawei networking equipment
• Stable 40G transmission performance
• Simplified cabling deployment
• Lower infrastructure upgrade cost
• Low latency and low power consumption
• Easy installation and maintenance
• Reliable enterprise-grade design

The module supports transmission distances up to 150 meters over OM3 or OM4 multimode fiber.

This module uses a duplex LC connector, allowing easier integration with existing LC fiber infrastructures.

QSFP-40G-LX4-MM uses CWDM technology and LC duplex connectors, while SR4 modules use MPO/MTP parallel optics. LX4 modules are more suitable for upgrading traditional LC-based networks.

Compatible coded versions are available for Huawei, Cisco, Juniper, Arista, HPE, and other major networking brands.

Yes. The module supports DDM/DOM functions for real-time monitoring and diagnostics.

Yes. It is widely used in enterprise and cloud data center environments requiring stable high-speed 40G connectivity.

Our technical team provides:

• Compatibility confirmation
• Network deployment suggestions
• Fiber cabling recommendations
• Configuration assistance
• Troubleshooting support

• 100% tested before shipment
• Strict quality inspection process
• Stable product performance
• Warranty support available

Supports worldwide shipping with secure packaging and fast logistics services.

The Huawei QSFP-40G-LX4-MM optical transceiver is a cost-effective and reliable solution for enterprises upgrading to 40G Ethernet networks. With LC duplex connectivity, CWDM technology, low power consumption, and enterprise-grade stability, this module helps simplify network upgrades while reducing overall infrastructure costs.

It is an ideal choice for modern data centers, cloud computing environments, and high-performance enterprise networks requiring dependable 40G optical connectivity.