• Silver-colored Arista OSFP-400G-XDR4-S 400G OSFP transceiver modules with blue handles and metallic connectors
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Arista

Arista OSFP-400G-XDR4-S | 400G OSFP Transceiver, Single-Mode, 1310nm, 2km, MPO-12

OSFP-400G-XDR4-S

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Description

The Arista OSFP-400G-XDR4-S is a high-performance 400 Gigabit Ethernet transceiver designed for data center and enterprise network applications. Supporting 400GBASE-XDR4 with 4-channel 100G PAM4 signaling over single-mode fiber, this OSFP module delivers reliable 2km transmission using MPO-12 APC connectors at 1310nm wavelength. Ideal for high-speed switch-to-switch interconnects, server connectivity with ConnectX adapters, and data center spine-leaf architectures requiring extended reach beyond DR4 distances.

Features

400GBASE-XDR4 standard supporting 2km extended reach over single-mode fiber
- 4-channel 100G PAM4 optical signaling for high-density data transmission
- 8-lane 50G PAM4 electrical interface (400GAUI-8 compliant)
- MPO-12 APC connector with low insertion loss and back reflection
- OSFP MSA compliant form factor with improved thermal management
- Optical interoperability with 4x 100GBASE-FR modules via breakout cables
- Digital Optical Monitoring (DOM) for real-time performance tracking
- Hot-pluggable design for simplified installation and maintenance
- CMIS 5.x management interface for standardized monitoring and control
- Forward Error Correction (FEC) support performed on host platform
- Compatible with IEEE 802.3bs 400G Ethernet specifications
- Low power consumption design optimized for data center deployment
- Commercial temperature range operation (0°C to 70°C)
- Trade Agreements Act (TAA) compliant options available

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

Form Factor: OSFP (Octal Small Form-factor Pluggable)
- Data Rate: 400 Gbps (400GBASE-XDR4)
- Optical Interface: 4 channels at 100 Gbps each (4x 100G PAM4)
- Electrical Interface: 8 lanes at 50 Gbps PAM4 (8x 50G)
- Wavelength: 1310nm
- Fiber Type: Single-mode fiber (SMF), parallel transmission
- Connector: MPO-12 APC (12-fiber ribbon, 8 fibers active)
- Transmission Distance: Up to 2km over OS2 single-mode fiber
- Operating Temperature: 0°C to 70°C (commercial)
- Power Consumption: Typically 8W (single-port OSFP)
- Compliance: OSFP MSA, IEEE 802.3bs, CMIS 4.0/5.0, 400GAUI-8
- Digital Diagnostics: DOM/DDM support for real-time monitoring
- Breakout Support: 4x 100GBASE-FR with MPO-to-LC breakout cables

FAQs

Q: What is the difference between XDR4 and DR4 transceivers?
A: XDR4 supports 2km transmission over single-mode fiber, while DR4 is limited to 500m. Both use 4-channel 100G PAM4 optics with MPO-12 APC connectors, but XDR4 provides four times the reach, making it ideal for campus and inter-building data center links.

Q: Can this OSFP module be used with QSFP-DD ports?
A: No, OSFP and QSFP-DD are physically incompatible form factors. However, optically they can interoperate—an OSFP-400G-XDR4 can connect to a QDD-400G-XDR4 via fiber, enabling connections between different switch platforms or between OSFP NICs and QSFP-DD switches.

Q: Does this transceiver support breakout to 100G ports?
A: Yes, the 400G XDR4 module supports 4x 100GBASE-FR breakout using MPO-12 to LC fanout cables. This allows a single 400G port to connect to four separate 100G QSFP28 ports, commonly used in leaf-spine architectures to connect 400G spines with 100G leaf switches.

Q: What platforms are compatible with this Arista OSFP transceiver?
A: This module is designed for Arista switches with OSFP cages, including the 7800R3, 7700R3, and other 400G-capable platforms. It is also compatible with ConnectX-7 and ConnectX-8 network adapters featuring single-port OSFP interfaces for high-performance computing and AI workloads.

Q: What type of fiber cable is required for 2km transmission?
A: A parallel single-mode fiber cable with MPO-12 APC connectors is required. The cable uses 8 of the 12 fibers in the ribbon—4 for transmit and 4 for receive. OS2 single-mode fiber is recommended to achieve the full 2km distance specification.

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