• Arista QDD-400G-XDR4 QSFP-DD 400G transceiver with silver metal module
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Arista

Arista QDD-400G-XDR4 | 400G QSFP-DD XDR4 Transceiver, MPO-12 APC, 2km SMF

QDD-400G-XDR4

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Description

This 400GBASE-XDR4 QSFP-DD transceiver delivers 400GbE over parallel single-mode fibre at 1310nm, reaching up to 2km via an MPO-12 APC connector. Its four 100G PAM4 optical lanes interoperate with 4 x 100GBASE-FR optics, making it well suited to 400G to 4x100G breakout links in data centre spine and leaf deployments. This is the non-channelized MPO-12 APC variant, distinct from the channelized and SN-connector versions.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Supports 4 x 100G breakout to 100GBASE-FR links
- Hot-pluggable QSFP-DD form factor
- Digital optical monitoring (DOM) supported
- Host FEC is required for the 2km link
- Compliant with QSFP-DD MSA, IEEE 802.3bs and 100G Lambda MSA

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: 400GbE (4 x 100G PAM4 optical lanes, 8 x 50G PAM4 electrical lanes via 400GAUI-8)
- Reach: up to 2km over parallel single-mode fibre
- Wavelength: 1310nm
- Connector: MPO-12 APC
- Optical interoperability with 4 x 100GBASE-FR (up to 2km)
- Maximum power consumption: 12W
- Operating temperature: 0 to 70°C

FAQs

Q: What fibre and connector does this transceiver use?
A: It uses parallel single-mode fibre terminated with an MPO-12 APC connector, with a reach of up to 2km at 1310nm.

Q: Can it connect to 100G optics?
A: Yes. It interoperates optically with 4 x 100GBASE-FR links up to 2km, allowing a 400G port to break out into four 100G connections.

Q: Is host FEC required?
A: Yes. Host FEC is required for the 2km link, so the host switch must support it on the port.

Q: How does this differ from the QDD-400G-XDR4-C and QDD-400G-XDR4-S variants?
A: This is the non-channelized MPO-12 APC version. The -C variant is channelized with 2x200G support and the -S variant uses SN connectors.

Q: What is the maximum power consumption?
A: The module draws a maximum of 12W, which should be considered in switch port power and thermal planning.

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