• Silver-colored arista osfp-400g-vsr4 sfp+ transceiver modules with blue handles and metallic mpo-12 connectors
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Arista

Arista OSFP-400G-VSR4 | 400G OSFP Transceiver, Multimode, 850nm, 50m, MPO-12

OSFP-400G-VSR4

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Description

The Arista OSFP-400G-VSR4 is a 400GBASE-VSR4 optical transceiver designed for high-speed data center and InfiniBand NDR applications. It supports transmission distances up to 50m over OM4 multimode fiber using an MPO-12 APC connector at 850nm wavelength. Featuring PAM4 modulation technology and CMIS compliance, this OSFP module delivers 4 channels of 100Gb/s operation with digital diagnostics monitoring for real-time performance tracking.

Features

4 independent optical lanes operating at 100Gb/s each using PAM4 modulation
- VCSEL transmitter technology with PIN photodiode receiver
- Hot-pluggable OSFP form factor for easy installation and maintenance
- CMIS (Common Management Interface Specification) 5.0 compliant management interface
- Real-time digital diagnostics monitoring (DDM/DOM) for temperature, voltage, laser bias current, and optical power levels
- Low power consumption design (maximum 9W typical)
- Support for both 400G Ethernet and InfiniBand NDR protocols
- IEEE 802.3-2022 and 802.3ck-2022 compliant optical and electrical interfaces
- MPO-12 APC connector minimizes back reflections for improved signal integrity
- Class 1 laser product compliant with IEC 60825-1 safety standards
- RoHS compliant and meets FCC and CE regulatory requirements
- Commercial temperature range operation (0°C to 70°C)
- Compatible with parallel OM3/OM4 multimode fiber infrastructure

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: 400Gb/s (4 x 100Gb/s PAM4)
- Wavelength: 850nm (VCSEL)
- Transmission Distance: Up to 50m on OM4 MMF, 30m on OM3 MMF
- Connector Type: MPO-12 APC (Angled Physical Contact)
- Compliance: IEEE 802.3-2022, IEEE 802.3ck-2022, OSFP MSA Rev 5.0, CMIS 5.0, InfiniBand NDR
- Power Consumption: Maximum 9W typical
- Operating Temperature: 0°C to 70°C (commercial)
- Power Supply: Single 3.3V
- Digital Diagnostics Monitoring: Yes (DDM/DOM)
- Modulation: PAM4 (Pulse Amplitude Modulation 4-level)

FAQs

Q: What is the main difference between VSR4 and SR4 transceivers?
A: VSR4 (Very Short Reach) transceivers use MPO-12 APC angled connectors to reduce optical back reflectance, while traditional SR4 modules use MPO-12 PC/UPC un-angled connectors. VSR4 modules are optimized for 50m transmission over OM4 fiber and are compliant with InfiniBand NDR specifications.

Q: Can this transceiver be used in QSFP-DD ports?
A: No, the OSFP-400G-VSR4 uses the OSFP form factor which is physically different from QSFP-DD. However, Arista offers an equivalent QDD-400G-VSR4 model for QSFP-DD ports. Both provide the same optical performance and interoperability.

Q: What fiber types are compatible with this module?
A: This transceiver requires OM3 or OM4 multimode fiber with MPO-12 APC connectors. It supports distances up to 30m on OM3 fiber and up to 50m on OM4 fiber. Important: Only use MPO-12 APC connectors, not standard PC/UPC connectors used with other multimode optics.

Q: Is this module suitable for InfiniBand applications?
A: Yes, the OSFP-400G-VSR4 is compliant with InfiniBand Trade Association (IBTA) Specification 1.6 for NDR (Next Data Rate) applications. It supports both 400G Ethernet and InfiniBand NDR interconnects, making it versatile for data center and HPC environments.

Q: Does this transceiver support breakout configurations?
A: The VSR4 specification is primarily designed for 400G point-to-point links. While some 400G transceivers support breakout to 4x100G, breakout capability depends on the host system configuration. Consult Arista documentation for specific breakout support on your switch platform.

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