• 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-XDR4-Arista | 400G QSFP-DD Transceiver, Single-Mode, 1310nm, 2km

QDD-400G-XDR4-Arista

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Description

The Arista QDD-400G-XDR4 is a 400GBASE-XDR4 QSFP-DD optical transceiver designed for high-speed data center and campus connectivity over single-mode fiber. Supporting 400Gb/s aggregate throughput via 4 parallel optical channels at 1310nm wavelength, this module delivers reliable performance up to 2km with an MPO-12 connector. Compliant with QSFP-DD MSA and IEEE 802.3bs standards, it features hot-swappable design, digital diagnostics monitoring, and seamless integration with Arista networking platforms.

Features

400GBASE-XDR4 compliant for 2km single-mode fiber transmission
- 4 parallel optical channels at 100Gb/s each (1310nm wavelength)
- PAM4 modulation for efficient high-speed signaling
- 8-lane electrical interface with integrated DSP and FEC
- Hot-pluggable QSFP-DD form factor with backward port compatibility
- Digital Diagnostics Monitoring (DDM/DOM) for real-time performance tracking
- Low power consumption design (<12W typical)
- Compliant with QSFP-DD MSA and IEEE 802.3bs standards
- MPO-12 optical connector for high-density fiber connectivity
- EML laser transmitters for extended reach performance
- Commercial temperature range operation (0°C to 70°C)
- RoHS and CE certified for environmental and safety compliance

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 (Quad Small Form Factor Pluggable - Double Density)
- Data Rate: 400Gb/s aggregate (4 x 100Gb/s per channel)
- Wavelength: 1310nm (4-channel parallel single-mode)
- Reach: Up to 2km over single-mode fiber (SMF)
- Connector Type: MPO-12 / MTP-12 (APC polished)
- Modulation: PAM4 (Pulse Amplitude Modulation)
- Electrical Interface: 8 x 50Gb/s PAM4 lanes compliant with IEEE 802.3bs
- Power Supply: Single +3.3V
- Power Consumption: Typical <12W
- Operating Temperature: 0°C to 70°C (commercial grade)
- Digital Diagnostics: DDM/DOM support (temperature, voltage, optical power monitoring)
- Compliance: QSFP-DD MSA, IEEE 802.3bs, RoHS, CE
- Hot-Swappable: Yes
- Transmitter: 4-channel EML (Electro-absorption Modulated Laser) array
- Receiver: 4-channel PIN photodiode array with TIA

FAQs

Q: What is the maximum transmission distance for the QDD-400G-XDR4?
A: The QDD-400G-XDR4 supports up to 2km over single-mode fiber (SMF) with an MPO-12 connector, making it ideal for intra-data center and campus backbone applications requiring extended reach beyond 500m DR4 modules.

Q: Is this transceiver compatible with other vendor equipment?
A: Yes, the QDD-400G-XDR4 follows the QSFP-DD MSA and IEEE 802.3bs 400GBASE-XDR4 standards, ensuring interoperability with other standards-compliant 400G XDR4 transceivers and switches from various vendors when using matching fiber types and wavelengths.

Q: Can I use this module in breakout configurations?
A: The QDD-400G-XDR4 operates as a native 400G parallel optics module over 4 fibers (MPO-12). For breakout configurations (e.g., 4x100G), you would need different transceiver types such as 400G-SR8 or specialized breakout cables, depending on your switch capabilities.

Q: What type of fiber cable is required for this transceiver?
A: This module requires single-mode fiber (SMF) cable with MPO-12 connectors. The cable should have at least 8 fibers (4 transmit, 4 receive) and be terminated with APC-polished MPO-12 connectors for optimal performance and low insertion loss.

Q: Does this transceiver require any licensing on Arista switches?
A: No additional software licenses are required for basic transceiver operation on Arista switches. The QDD-400G-XDR4 is a hardware component that will function on compatible 400G QSFP-DD ports with standard Arista EOS software.

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