• Silver-colored arista qdd-400g-xdr4-s 400g qsfp-dd transceiver modules with blue handles and metallic connectors
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Arista

Arista QDD-400G-XDR4-S | 400G QSFP-DD XDR4 Transceiver, SMF, 2km, SN

QDD-400G-XDR4-S

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Description

The QDD-400G-XDR4-S is a 400G QSFP-DD optical transceiver from Arista's 400G QSFP-DD optics range. It runs 400GBASE-XDR4 over parallel single-mode fibre at 1310nm for up to 2km, which suits 400G data centre links and breakout to 4 x 100G-FR.

The -S variant is ordered with SN optical connectors, distinguishing it from the MPO-12 version of the same XDR4 optic. Each lane carries 100G, with transmit power of -2.4 to +4.0 dBm per lane and receive power of -6.4 to +4.5 dBm per lane over SMF G.652 fibre. The module draws a maximum of 12 W, powered from the host switch port, and operates across a case temperature of 0 to 70 C.

It fits QSFP-DD ports and interoperates optically with 4 x 100GBASE-FR links up to 2km. Platform support is listed in Arista's Transceiver and Cable Guide.

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

Features

- 400GBASE-XDR4 optics for up to 2km over parallel single-mode fibre
- Optical interoperability with 4 x 100GBASE-FR links up to 2km
- SN optical connectors for high-density breakout cabling
- QSFP-DD form factor for high-density 400G switch ports
- Four 100G lanes at 1310nm for 400G and breakout deployments

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
- PHY type: 400GBASE-XDR4 (4x 100GBASE-FR)
- Wavelength: 1310 nm
- Fibre type: Parallel single-mode (SMF G.652)
- Maximum reach: 2 km
- Connector: SN optical connectors
- Tx power: -2.4 to +4.0 dBm per lane
- Rx power: -6.4 to +4.5 dBm per lane
- Optical interoperability: 4 x 100GBASE-FR up to 2km
- Maximum power consumption: 12 W
- Dimensions QSFP-DD Type 1 (H x W x D): 13.5 x 18.4 x 78.3 mm
- Dimensions QSFP-DD Type 2 (H x W x D): 13.5 x 18.4 x 93.3 mm
- Operating case temperature: 0 to 70 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 95%
- Operating altitude: 0 to 10,000 ft

FAQs

Q: What fibre does this transceiver use?
A: It uses parallel single-mode fibre (SMF G.652) at 1310nm, with a maximum reach of 2km.

Q: How does the -S variant differ from the standard XDR4 optic?
A: The -S variant is ordered with SN optical connectors, whereas the base XDR4 optic uses an MPO-12 connector.

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

Q: How much power does it draw?
A: A maximum of 12 W per module, powered from the host switch port.

Q: Which ports does it fit?
A: It fits QSFP-DD ports. Platform support is listed in Arista's Transceiver and Cable Guide.

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