• 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 QDD-400G-VSR4-Arista | 400G QSFP-DD Transceiver, Multi-Mode, 850nm, 50m, MPO-12

QDD-400G-VSR4-Arista

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Description

The Arista QDD-400G-VSR4 is a 400GBASE-VSR4 QSFP-DD transceiver designed for high-speed data center interconnects. It delivers 400 Gbps throughput over multi-mode OM4 fiber up to 50 meters using PAM4 modulation at 850nm wavelength. This plug-in module features an MPO-12 APC connector, supports digital optical monitoring, and complies with QSFP-DD MSA and IEEE 802.3bs standards for reliable short-reach applications.

Features

400GBASE-VSR4 compliance for high-density data center applications
- PAM4 modulation technology with 4x 100G electrical lanes
- MPO-12 APC connector for low insertion loss and back reflection
- Digital Optical Monitoring (DOM) for real-time performance tracking
- Hot-pluggable QSFP-DD form factor for easy installation and replacement
- Compliant with QSFP-DD Multi-Source Agreement (MSA)
- IEEE 802.3bs and 400GAUI-8-PAM4 standard compliance
- CMIS 4.0 management interface support
- Commercial temperature range operation (0°C to 70°C)
- Low power consumption design for efficient data center operations
- RoHS compliant and meets industry safety certifications

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: QSFP-DD
- Data Rate: 400 Gbps (400GBASE-VSR4)
- Wavelength: 850nm
- Fiber Type: Multi-mode OM4 (MMF)
- Maximum Distance: 50m over OM4 fiber
- Connector Type: MPO-12 APC (angled physical contact)
- Modulation: PAM4 (4x 100G PAM4 lanes)
- Power Consumption: ≤12W typical
- Operating Temperature: 0°C to 70°C (commercial range)
- Digital Optical Monitoring (DOM): Supported
- Compliance: QSFP-DD MSA, IEEE 802.3bs, CMIS 4.0

FAQs

Q: What is the maximum distance supported by the QDD-400G-VSR4?
A: The QDD-400G-VSR4 supports transmission distances up to 50 meters over OM4 multi-mode fiber with an MPO-12 APC connector.

Q: Is this transceiver compatible with QSFP+ and QSFP28 modules?
A: Yes, QSFP-DD form factor is backward compatible with QSFP+, QSFP28, and QSFP56 modules in compatible switch ports, though full 400G speed requires QSFP-DD infrastructure.

Q: What fiber type is required for the QDD-400G-VSR4?
A: This transceiver requires OM4 multi-mode fiber (MMF) with 50/125 micron core/cladding for optimal performance at distances up to 50 meters.

Q: Does this module support breakout configurations?
A: The VSR4 variant is designed primarily for 400G point-to-point links. For breakout applications to 4x100G, consider the DR4 or XDR4 variants which support native breakout to 100G-DR/FR QSFP modules.

Q: What is the power consumption of this transceiver?
A: The QDD-400G-VSR4 has a maximum power consumption of approximately 12W, typical for 400G QSFP-DD optical modules with VSR4, SR8, and similar multi-mode configurations.

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