• Silver-colored arista H-D400-4Q100-1M sfp+ transceiver modules with blue handles and metallic connectors for 400g active DAC
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Arista

Arista OSFP-400G-LR4-Arista | 400G LR4 Transceiver, 1310nm, 10km, SMF, LC, OSFP

OSFP-400G-LR4-Arista

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Description

The Arista OSFP-400G-LR4 is a high-performance 400GBASE-LR4 optical transceiver designed for long-reach data centre and enterprise applications. Supporting 400Gbps throughput up to 10km over single-mode fibre at 1310nm wavelength via duplex LC connectors, this OSFP module is ideal for spine-leaf architectures and high-speed uplink connections. Compliant with IEEE 802.3bs, OSFP MSA, and CMIS 4.0 standards, it delivers reliable connectivity for cloud, HPC, and AI infrastructure deployments.

Features

400GBASE-LR4 compliant for long-reach single-mode fibre connectivity
- 8x 50Gbps PAM4 electrical lanes for 400Gbps aggregate bandwidth
- OSFP MSA form factor with finned-top design for enhanced thermal management
- IEEE 802.3bs and CMIS 4.0 compliant for interoperability and standardisation
- Digital diagnostics monitoring (DDM/DOM) for real-time performance visibility
- Low latency and high reliability for mission-critical data centre applications
- Duplex LC/UPC connectors for standard single-mode fibre cabling
- Optimised for spine-leaf architectures and 400G switch uplinks
- Supports hot-pluggable installation for operational flexibility
- Commercial temperature range (0°C to 70°C) for air-cooled data centre environments

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Data Rate: 400Gbps (400GBASE-LR4)
- Form Factor: OSFP (Octal Small Form-factor Pluggable)
- Wavelength: 1310nm
- Reach: Up to 10km over single-mode fibre (OS2 SMF)
- Connector Type: Duplex LC/UPC
- Electrical Interface: 8x 50Gbps PAM4 lanes (400GAUI-8)
- Power Consumption: Typically ≤10W
- Operating Temperature: 0°C to 70°C (commercial)
- Digital Diagnostics Monitoring (DDM): Supported (DOM)
- Standards Compliance: IEEE 802.3bs, OSFP MSA, CMIS 4.0, OIF 56G PAM4

FAQs

Q: What is the maximum transmission distance for the OSFP-400G-LR4?
A: The OSFP-400G-LR4 supports transmission distances up to 10km over OS2 single-mode fibre using duplex LC connectors at 1310nm wavelength.

Q: Is this transceiver compatible with QSFP-DD ports?
A: No, the OSFP form factor is physically different from QSFP-DD. Arista offers equivalent QSFP-DD modules (such as QDD-400G-LR4) for QSFP-DD ports, or mechanical adapters may be used for specific applications.

Q: Does the OSFP-400G-LR4 support breakout configurations?
A: No, the LR4 variant is designed for native 400G point-to-point links. For breakout applications, consider Arista's 400G-FR4 or 400G-PLR4 modules which support 4x 100G configurations.

Q: What switches are compatible with this OSFP transceiver?
A: This module is compatible with Arista 400G switches featuring OSFP ports, such as the 7800R3, 7300X3, and other platforms supporting 400G OSFP interfaces. Verify compatibility with your specific switch model and EOS version.

Q: Does this transceiver include digital diagnostics monitoring?
A: Yes, the OSFP-400G-LR4 includes DDM (Digital Optical Monitoring) support via CMIS 4.0, providing real-time access to operating parameters such as temperature, voltage, optical power, and laser bias current.

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