• Silver-colored arista qdd-400g-plr4 sfp+ transceiver modules with blue handles and metallic connectors for 400g networking
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Arista

Arista QDD-400G-PLR4 | 400G-PLR4 QSFP-DD Transceiver, 4x100G, MPO-12, 10km SMF

Arista QDD-400G-PLR4 | 400G-PLR4 QSFP-DD Transceiver, 4x100G, MPO-12, 10km SMF

QDD-400G-PLR4

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Description

The Arista QDD-400G-PLR4 is a 400GBASE-PLR4 QSFP-DD optical transceiver designed for high-density 400 Gigabit Ethernet deployments across data centre and cloud network environments. Transmitting across four parallel 100G lanes at 1310nm over single-mode fibre with an MPO-12 APC connector, it achieves reaches of up to 10km — making it ideal for campus backbone, inter-building, and long-reach data centre interconnect applications. Breakout support allows flexible deployment as 4x 100GBASE-LR links using standard QSFP28 optics, maximising infrastructure versatility.

Compliant with QSFP-DD MSA, 100G Lambda MSA, OIF 56G PAM4, and IEEE 802.3cu, this transceiver offers broad standards-based interoperability with 400GBASE-DR4 and XDR4 modules. Digital Optical Monitoring (DOM) via CMIS 4.0 provides real-time visibility into temperature, voltage, TX/RX power, and bias current for proactive network management. Upgrade your network with gear from iptrading.com.au — Australia's IT hardware specialists.

Features

- Hot-pluggable QSFP-DD form factor for tool-free installation and live replacement
- Four parallel 100G optical lanes deliver aggregate 400 Gbps throughput
- MPO-12 APC connector supports direct SMF connectivity up to 10km
- Breakout mode enables 4x 100GBASE-LR connections to QSFP28 ports
- Digital Optical Monitoring (DOM) for real-time diagnostics and fault detection
- CMIS 4.0 management interface for advanced module configuration and status reporting
- Optical interoperability with 400GBASE-DR4 and XDR4 modules
- PAM4 modulation over 8x 50Gb/s electrical lanes for efficient signal encoding
- Compliant with QSFP-DD MSA, 100G Lambda MSA, OIF 56G PAM4, and IEEE 802.3cu
- RoHS and CE certified for environmental and safety compliance
- Suited for 400G Ethernet, hyperscale data centre, and cloud network interconnects

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Datasheet

Technical Specifications

- Form Factor: QSFP-DD
- Data Rate: 400 Gbps (4x 100 Gbps parallel lanes)
- Standard: 400GBASE-PLR4
- Wavelength: 1310nm (lanes: 1271 / 1291 / 1311 / 1331nm)
- Fiber Type: Single-Mode Fibre (SMF)
- Connector: MPO-12 APC
- Maximum Reach: Up to 10km
- Modulation: PAM4 (8x 50Gb/s electrical lanes)
- Optical Interoperability: 400GBASE-DR4 (up to 500m), XDR4 (up to 2km), PLR4 (up to 10km)
- Digital Optical Monitoring (DOM): Supported
- Management Interface: CMIS 4.0
- Operating Temperature: 0°C to 70°C (commercial)
- Maximum Power Consumption: 12W
- Compliance: QSFP-DD MSA, 100G Lambda MSA, OIF 56G PAM4, IEEE 802.3cu, RoHS, CE

FAQs

Q: What is the maximum reach of the Arista QDD-400G-PLR4 transceiver?
A: The QDD-400G-PLR4 supports transmission distances of up to 10km over single-mode fibre (SMF) using an MPO-12 APC connector, making it suitable for long-reach data centre interconnect and campus backbone applications.

Q: Can the QDD-400G-PLR4 be used in breakout mode?
A: Yes. The QDD-400G-PLR4 supports 4x 100GBASE-LR breakout mode, allowing a single 400G port to connect to four individual QSFP28 100G-LR ports. This provides significant deployment flexibility when connecting to legacy or mixed-speed infrastructure.

Q: Is this transceiver compatible with other 400G optical standards?
A: The QDD-400G-PLR4 provides optical interoperability with 400GBASE-DR4 (up to 500m), XDR4 (up to 2km), and PLR4 (up to 10km) modules, provided the MPO-12 connector type is matched. Standards compliance with QSFP-DD MSA, 100G Lambda MSA, OIF 56G PAM4, and IEEE 802.3cu ensures broad multi-vendor interoperability.

Q: Does the QDD-400G-PLR4 support Digital Optical Monitoring?
A: Yes. The transceiver includes full DOM (Digital Optical Monitoring) support via a CMIS 4.0 management interface, enabling real-time monitoring of temperature, supply voltage, transmit/receive optical power, and bias current directly from your network management system.

Q: What type of fibre and connector does this transceiver require?
A: The QDD-400G-PLR4 requires single-mode fibre (SMF) and uses an MPO-12 APC (angled physical contact) connector. Ensure your existing fibre infrastructure uses SMF with MPO-12 APC-compatible patch cables for optimal performance and minimal insertion loss.

Q: Can I purchase the Arista QDD-400G-PLR4 in Australia through IP Trading?
A: Yes. The Arista QDD-400G-PLR4 is available through iptrading.com.au, Australia's specialist IT hardware reseller. Contact the team for pricing, stock availability, and volume purchase enquiries tailored to your data centre or enterprise network project.

Datasheet

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