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OPTICAL TRANSCEIVER

QDD-400G-XDR4

Arista QDD-400G-XDR4 400G QSFP-DD XDR4 Optical Transceiver (Used)

P/N:QDD-400G-XDR4SKU: QDD-400G-XDR4SwitchInfra item:7192Brand: Arista
Specifications

Port mode and breakout requirements

Arista lists QDD-400G-XDR4 for 400G-XDR4 or four 100GBASE-FR optical links. For breakout, verify the host port mode, software support, FEC settings, lane mapping, remote optics and fiber assembly together. A QSFP-DD cage alone does not establish that a particular switch supports the intended configuration.
Form FactorQSFP-DD
Wavelength1310 nm band
ConnectorMPO-12 APC
MediaParallel single-mode fiber
BrandArista
ModelQDD-400G-XDR4
Reachup to 2 km over parallel single-mode fiber
ConditionUsed
Data Rate400G; supports 4x100G breakout
Part NumberQDD-400G-XDR4
Optical Standard400G-XDR4 / 4x100GBASE-FR

Before you order

  • Confirm the exact SKU, part number, specification option and quantity.
  • Confirm the host platform, port, electrical interface and firmware requirements.
  • Confirm availability, lead time, destination and applicable service terms before payment.
Description

Choosing a 400G parallel-fiber link

The used Arista QDD-400G-XDR4 listing is a candidate for 400G links up to 2 km over parallel single-mode fiber. It uses a QSFP-DD host interface and an MPO-12 APC optical connector. Check the installed fiber and both endpoint platforms before selecting a module.

Check the connector, not just the distance

A duplex LC fiber pair is not the specified connection for this module. Include connector type, fiber polarity, link loss and patch-panel layout in your request. The base QDD-400G-XDR4 is not the XDR4-S connector variant or the XDR4-C channelized variant.

See the Arista transceiver datasheet, 400G QSFP-DD ordering table for the exact part number. These are manufacturer design specifications, not test results for the offered used unit.

Compare optical transceiver options or request a quote. Include quantity, destination country and city, target arrival date, and host model. Availability, dispatch origin, freight, customs responsibility and seller support must be confirmed in the written quote.

Features

Before accepting a used unit

Request the exact part number and hardware revision, serial-level traceability, connector inspection and available link-test records. Ask which host, software, speed and test conditions were used. Confirm the warranty provider, duration, return conditions and return-shipping responsibility for the quoted unit. A catalogue stock label is not evidence that these checks have been completed.

  • Reach: up to 2 km over parallel single-mode fiber
  • Data Rate: 400G; supports 4x100G breakout
  • Form Factor: QSFP-DD
  • Optical Standard: 400G-XDR4 / 4x100GBASE-FR

Product questions & answers

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Channel and project resources

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OA03 · Arista

QDD-400G-XDR4

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