Category
Compatible OSFP-400G-SR4 400GBASE-SR4 OSFP Optical Transceiver Module for AI Networking
Product Highlights
*400GBASE-SR4 OSFP optical transceiver
*Supports 100m over OM4 and 150m over OM5 multimode fiber
*Optimized for AI networking and GPU cluster connectivity
*PAM4 modulation with 4×100G electrical lanes
* Compatible with NVIDIA, Cisco, Arista, Huawei, H3C and Juniper platforms
*Low-latency interconnect for hyperscale cloud infrastructure
*Supports DOM monitoring
*Compliant with IEEE 802.3cm and OSFP MSA standards
Brand Compatible With 400GBASE-SR4 OSFP Transceiver Module(OSFP Double Fiber , 400G, 850nm, 50m, MTP/MPO, DOM)
Supporting 400GBASE-SR4 transmission over OM4 and OM5 multimode fiber, the OSFP optical transceiver provides high-density bandwidth, low latency, and reliable Ethernet connectivity for next-generation 400G deployments.
Its OSFP form factor offers enhanced thermal performance compared with traditional QSFP solutions, making it particularly suitable for modern AI fabrics, high-performance computing environments, and large-scale data center architectures.
Product Details
Data Rate | Module Type | Distance | Wavelength | Interface | Temperature | DOM |
400Gb/s | OSFP | 50M | 850nm | MPO-12/APC | 0~70℃ | Yes |
Specifications
| NVIDIA/Mellanox Ethernet Compatible | OSFP-400G-SR4 | Vendor Name | Firstoptic |
| Form Factor | Single-port OSFP Flat Top | Max. Data Rate | 425Gbps (4x106.25Gbps) |
| Wavelength | 850nm | Max. Cable Distance | 30m@OM3/50m@OM4 or OM5 |
| Connector | MPO-12/APC | Media | MMF |
| Transmitter Type | VCSEL | Receiver Type | PIN |
| TX Power | -4.6~4dBm | Minimum Receiver Power | -6.3dBm |
| Power Budget | 1.7dB | Receiver Overload | 4.0dBm |
| Max. Power Consumption | 8.5W | Extinction Ratio | 2.5dB |
| DDM/DOM | Supported | Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x100G-PAM4 | Modulation (Optical) | 4x100G-PAM4 |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR | Inbuilt FEC | Yes |
| Core Size | 50/125µm | Packaging Technology | COB |
| MTBF | 7210148 Hours (@40°C, 60% CL) | Application | 400G Ethernet |
| 3580900 Hours (@40°C, 90% CL) | |||
| 5016607 Hours (@50°C, 60% CL) | |||
| 2384800 Hours (@50°C, 90% CL) | |||
| 2323762 Hours (@70°C, 60% CL) | |||
| 1042265 Hours (@70°C, 90% CL) | |||
| Protocols | OSFP MSA Rev 5.0、IEEE 802.3ck、IEEE 802.3-2022 | Warranty | 3 Years |
AI Fabric Connectivity
The 400G OSFP SR4 optical transceiver enables high-bandwidth AI fabric connectivity between 400G Ethernet switches deployed in large-scale AI environments.
Supporting 400GBASE-SR4 transmission over OM4 multimode fiber, this OSFP optical transceiver helps reduce network bottlenecks while delivering reliable east-west traffic performance for GPU-intensive workloads.


GPU Cluster Interconnect
The 400G OSFP SR4 module supports direct connectivity between AI switches, high-speed NICs, and GPU servers.
Its low-latency architecture is designed to accelerate distributed AI training and high-performance computing applications while maintaining consistent bandwidth across large GPU clusters.
1. Platform Validation
Verified on major switch platforms including Arista, Cisco, NVIDIA, Huawei, H3C, and Juniper for reliable 400GBASE-SR4 interoperability.
2. Performance Testing
72-hour burn-in testing, temperature cycling (0°C–70°C), optical power verification, and BER validation (BER < 1E-12).
3. PAM4 Signal Integrity Testing
All 4 transmit and 4 receive lanes are individually validated to ensure stable 400GBASE-SR4 signal transmission over multimode fiber.
4. Interoperability Testing
Validated with OSFP switch platforms, AI networking environments, and hyperscale data center infrastructures.
Certifications: CE, FCC, RoHS compliant.
Warranty: 3-year warranty against manufacturing defects with lifetime technical support.
Test Equipment
Platform Validation
Environmental Reliability TestCompatibility & Platform Validation
This OSFP optical transceiver provides reliable interoperability with major networking platforms while supporting 400GBASE-SR4 applications in modern data centers.
- Arista 7060X5 / 7800 series
- Cisco Nexus 9000 series
- NVIDIA Spectrum series
- Huawei CloudEngine series
- H3C S12500X series
- Juniper QFX series
- Dell PowerSwitch series

Note: Installing a compatible transceiver does not void your network equipment warranty per major manufacturers' guidelines.
FAQ Section
Q1: What is a 400G OSFP SR4 optical transceiver?
The 400G OSFP SR4 optical transceiver is a high-speed multimode optical module designed for AI networking, hyperscale data centers, and high-density Ethernet switching environments. It supports 400GBASE-SR4 transmission using PAM4 modulation and MPO connectivity.
Q2: What fiber type is required for a 400GBASE-SR4 OSFP optical transceiver?
The 400GBASE-SR4 OSFP optical transceiver uses multimode fiber (MMF). It typically supports up to 100 meters over OM4 fiber and up to 150 meters over OM5 fiber, making it suitable for short-reach high-bandwidth data center links.
Q3: What is the difference between OSFP SR4 and QSFP-DD SR8?
Both modules support 400G Ethernet connectivity, but OSFP provides improved thermal performance and higher power handling capabilities. OSFP SR4 is commonly deployed in AI networking and hyperscale infrastructure, while QSFP-DD SR8 is widely used in traditional high-density data center environments.
Q4: Is the 400G OSFP SR4 suitable for AI networking?
Yes. The 400G OSFP SR4 optical transceiver is optimized for AI networking, GPU cluster interconnects, and high-performance computing environments that require low-latency, high-bandwidth Ethernet connectivity.
Q5: Which platforms are compatible with the OSFP-400G-SR4 module?
The OSFP-400G-SR4 optical transceiver is commonly compatible with NVIDIA Spectrum platforms, Cisco, Arista, Huawei, H3C, Juniper, and other leading Ethernet switch systems, depending on the required coding profile.
Q6: What applications are ideal for a 400G OSFP SR4 optical transceiver?
Typical applications include AI fabrics, GPU clusters, hyperscale cloud infrastructure, spine-leaf data center architectures, and high-density Ethernet switching networks requiring scalable 400G connectivity.
Q7: Why is OSFP becoming popular in AI data centers?
OSFP modules offer better thermal performance and support higher power budgets compared to traditional form factors. This makes them well suited for next-generation AI networking platforms and large-scale GPU deployments.
Q8: Does the 400G OSFP SR4 support Digital Optical Monitoring (DOM)?
Yes. The 400G OSFP SR4 optical transceiver supports DOM functionality, allowing real-time monitoring of temperature, voltage, transmit power, and receive power for improved network reliability.
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