• 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-800G-2FR4-Arista | 800G QSFP-DD Transceiver, 2x400G-FR4, SMF, 2km, Duplex LC

QDD-800G-2FR4-Arista

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Description

This 800G QSFP-DD optical transceiver carries two independent 400GBASE-FR4 links over duplex single-mode fibre, reaching up to 2km. It is built for data centre spine and leaf links and AI/ML cluster fabrics where a single 800G port is split into two 400G-FR4 connections.

The module uses a QSFP-DD form factor with dual duplex LC connectors and operates on CWDM4 wavelengths of 1271, 1291, 1311 and 1331 nm per 400G link. Transmit power is -3.3 to +3.5 dBm per lane and receive power is -7.3 to +3.5 dBm per lane. Maximum power consumption is 16W, drawn from the host switch port, and the operating case temperature range is 0 to 70C. It runs over standard G.652 single-mode fibre.

It fits Arista 800G QSFP-DD ports and interoperates with 2x 400G-FR4 OSFP or QSFP-DD optics, or 2x 200G-FR4 QSFP optics. The OSFP equivalent is OSFP-800G-2FR4.

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

Features

- Two 400GBASE-FR4 channels in one 800G QSFP-DD module
- Dual-rate operation, 400GBASE-FR4 and 200GBASE-FR4
- Duplex LC connectivity over standard single-mode fibre up to 2km
- Supports 800G to 2x 400G breakout in high-density data centre deployments
- CWDM4 wavelengths on each 400G link
- Powered by the host switch port, no external power required

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

- PHY type: 800GBASE-2FR4 (2x 400GBASE-FR4)
- Form factor: QSFP-DD
- Connector type: 2x LC (duplex)
- Wavelengths: 1271, 1291, 1311, 1331 nm
- Cable type: SMF G.652
- Maximum reach: 2km
- Tx power: -3.3 to +3.5 dBm per lane
- Rx power: -7.3 to +3.5 dBm per lane
- Maximum power consumption: 16W
- Operating case temperature: 0 to 70C
- Storage temperature: -40 to 70C
- Interoperability: 2x 400G-FR4 OSFP/QSFP-DD or 2x 200G-FR4 QSFP

FAQs

Q: What does this module connect to at the far end?
A: It interoperates with 2x 400G-FR4 OSFP or QSFP-DD optics, or 2x 200G-FR4 QSFP optics, so one 800G port can serve two separate endpoints.

Q: What fibre and connectors does it need?
A: It uses standard G.652 single-mode fibre with duplex LC connectors, for a reach of up to 2km.

Q: How much power does it draw?
A: Maximum power consumption is 16W, supplied by the host switch port. No external power is needed.

Q: Which switch ports and software does it need?
A: It fits Arista 800G QSFP-DD ports, with a minimum EOS release of 4.29.2.

Q: Is there an OSFP version of this transceiver?
A: Yes. The OSFP equivalent is OSFP-800G-2FR4, for switches with OSFP ports.

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