The OSFP-SR4-400G-FL operates as a 400GBASE-SR4 OSFP optical module, leveraging 4-channel PAM4 modulation at up to 106.25Gbps per lane over OM4 multi-mode fiber for links up to 50m. It fully complies with the OSFP Multi-Source Agreement (MSA) and incorporates built-in real-time digital diagnostic monitoring for operational temperature, voltage, bias current, and optical power tracking.
Key Features of FS OSFP-SR4-400G-FL Compatible LINK-PP 400G OSFP
FS OSFP-SR4-400G-FL Compatible LINK-PP features 400Gbps InfiniBand NDR transmission, low energy draw, and multi-mode optical connectivity up to 50m. It unifies 850nm array technology, a secure MPO-12/APC interface, and comprehensive digital diagnostics to streamline network management.
This transceiver module fully complies with the OSFP MSA specification to guarantee physical and electrical compatibility with industry switches. Operating within commercial temperature ranges, the unit draws a maximum power consumption of only 8.5W to reduce thermal load across dense rack layouts.
OSFP-SR4-400G-FL: 400 Gbps Connectivity for InfiniBand NDR Clusters
Massive 400Gbps aggregate throughput is achieved across 4 parallel channels using advanced 100G PAM4 signaling. These fast transmission speeds make the hardware an ideal choice for latency-critical AI computing nodes and large InfiniBand NDR compute clusters.
OSFP-SR4-400G-FL Module with 850nm Wavelength
An array of 850nm VCSEL transmitters handles optical signal generation across parallel fiber strands. This specific near-infrared spectrum provides an efficient optical source tailored for short-distance multi-mode connectivity inside server rooms.
Optical reach extends up to 50m when using standard OM4 multi-mode fiber cabling. Such a link span easily covers intra-rack connections, top-of-rack patching, and neighboring row switches without needing single-mode infrastructure.
OSFP-SR4-400G-FL Module with MPO-12/APC Interface
Equipped with an MPO-12/APC optical interface, the module establishes firm, repeatable connections with OM4 trunk cables. The precision design significantly suppresses internal reflections to optimize optical return loss across the entire transceiver link.
OSFP-SR4-400G-FL Module with DDM for Real-Time Monitoring
Integrated digital diagnostic monitoring circuits report real-time telemetry over the two-wire management interface. Network administrators can instantly check operating temperature, supply voltage, laser bias current, and optical Rx/Tx power to prevent link downtime.
Every OSFP-SR4-400G-FL 400G OSFP module meets strict international standards, holding full ISO 9001, CE, RoHS, and FCC certifications for safety and quality.
Each 400G OSFP transceiver module undergoes rigorous factory optical and electrical inspections to ensure stable long-term operation.
OSFP-SR4-400G-FL Quality Certifications
The module adheres to strict environmental and industrial compliance guidelines required for global network deployments.
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.
OSFP-SR4-400G-FL Certified for Reliable Host-Device Compatibility
Comprehensive verification on leading switch and host hardware ensures smooth plug-and-play installation without recognition errors.
Every OSFP-SR4-400G-FL OSFP optical module undergoes multi-stage factory evaluations to ensure flawless signal transmission in real-world deployments. To learn more about our comprehensive qualification procedures, explore the LINK-PP Test Support Center.
Optical Spectrum Test
Verify central emission wavelengths to maintain stable multi-channel optical output.
Eye Pattern Test
Analyze optical signal clarity to ensure clean, low-jitter waveform transitions.
Bit Error Rate Test
Measure packet transmission accuracy to prevent unexpected data loss issues.
Temperature Test
Check stable transceiver operation across standard commercial ambient thermal ranges.
Product Shipping for FS OSFP-SR4-400G-FL Compatible LINK-PP 400G OSFP
Every OSFP-SR4-400G-FL module is carefully packaged and processed through dependable shipping workflows to guarantee safe arrival. We partner with established international carriers to deliver your networking hardware swiftly to sites worldwide.
Anti-Static Protective Packaging
Shield optical modules against electrostatic discharge damage during all handling.
Shock-Resistant Transport Protection
Protect optical transceivers from unexpected physical impacts along transit routes.
Fast Order Processing and Dispatch
Accelerate warehouse order preparation for prompt handover to international couriers.
Global Logistics and International Delivery
Coordinate overseas freight forwarding to deliver parcels safely across borders.
Insert the OSFP-SR4-400G-FL optical module into the switch OSFP slot until firmly latched, then mate a clean MPO-12/APC cable to activate instant 400G connectivity. It provides essential plug-and-play fabric interconnections across InfiniBand NDR compute clusters, powering low-latency GPU communication and dense AI training workloads.
OSFP-SR4-400G-FL Technical Support
LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.
Pre-Sales Technical Consultation
Professional guidance to help you select the optimal OSFP-SR4-400G-FL module for your network design and application needs.
Compatibility Verification Support
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
Deployment & Installation Assistance
Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
A:
Yes, up to 50 m on OM4 is supported, but only with an OM4 fiber assembly terminated with MPO-12 APC connectors and with total channel insertion loss within the module specification. The exact link budget cannot be derived from the feature list alone; it depends on the module’s Tx OMA, Rx sensitivity, connector/splice count, and aging margin. In practice, reserve margin and verify the link meets the required pre-FEC BER / FEC threshold, e.g., KP4 FEC for 400G Ethernet. By
admin
A:
No. This module uses an MPO-12 APC optical interface. You must use MPO-12 APC cable assemblies, either patch cords or trunks. Do not mate UPC and APC connectors, because the endface geometry is different; this can cause high insertion loss, poor return loss, and possible endface damage. Also confirm gender, polarity, and key orientation. By
admin
A:
Yes, provided your switch port is configured for 400G Ethernet and supports the relevant 400G Ethernet mode, OSFP form factor, CMIS management, PAM4 106.25Gbps per lane, and required FEC. The transceiver itself is not “configured” to Ethernet; the switch port profile determines whether it runs 400G Ethernet or InfiniBand NDR. Vendor firmware and module coding should also be confirmed. By
admin
We integrated these transceivers into our enterprise low-latency core switching matrix. The OSFP housing fits snugly without thermal throttling during peak load stress tests, staying around 42°C. Full compliance with IEEE 802.3 and InfiniBand NDR protocols makes high-density server rack deployment totally painless. =)
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496190
496294
R***l
United Arab Emirates
Verified
Purchase
5 .0
2026-03-24
Solid build quality on the OSFP form factor casing. The MPO-12/APC connector clicks in securely with low insertion loss, making our intra-datacenter spine-leaf interconnect run flawlessly. :D
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496190
496290
B***t
Mexico
Verified
Purchase
5 .0
2025-10-15
Running these for high-speed clustering in our regional research facility. Total compliance with OSFP MSA specifications made physical slotting very smooth. Inbuilt FEC handles burst traffic cleanly, and continuous 400G InfiniBand link testing showed no packet loss over our short fiber distribution trunks. :D
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character.
496190
496289
Z***s
Australia
Verified
Purchase
5 .0
2025-07-09
Migrated our multi-node deep learning cluster from HDR to NDR with this module batch. Every single unit synced at 400Gbps over short multi-mode fiber spans. The MPO-12 interface prevents optical return-loss reflections effectively, giving rock-solid stability during continuous multi-day parallel model checkpointing tasks.
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496190
496295
D***r
Canada
Verified
Purchase
5 .0
2025-06-21
We used these 50m multimode optical transceivers for high-density top-of-rack server aggregation. They run cool well within the 0°C to 70°C commercial temperature window.
Please write comments with more than three
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496190
496292
L***r
Denmark
Verified
Purchase
4 .0
2025-02-04
The LO-M85400-SR4C transceivers run fast and rock solid at 400G NDR speed, but the outer packaging box was slightly dented during international freight delivery. Optics inside were completely unharmed.
United States · English · USD
