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Arista

Arista QDD-400G-XDR4 | 400GBASE-XDR4 | QSFP-DD | 1310nm | 2km reach | Parallel SMF | MPO-12

SKU:QDD-400G-XDR4

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Description

400GBASE-XDR4 QSFP-DD transceiver for up to 2 km over parallel single-mode fiber. Ideal for high-density 400GbE leaf-spine or aggregation links requiring extended campus or long row-to-row reach with simplified parallel optics cabling.

Features

- Standards-based 400GBASE-XDR4 for up to 2 km reach
- High-density QSFP-DD form factor
- Parallel SMF for scalable 400G fabrics
- Optimized for leaf-spine and aggregation interconnects
- MPO-12 APC interface for rapid deployment

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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FAQs

Technical Specifications

FAQs

Q: How does XDR4 differ from DR4?
A: Both use parallel SMF and MPO connectors; XDR4 is specified for up to 2 km reach, while DR4 targets up to 500 m.

Q: Can this module run over duplex single-mode fiber?
A: No. It requires parallel single-mode fiber with an MPO-12 (APC) connector.

Q: Is FEC required for operation?
A: Yes. 400G PAM4 links require host-side FEC per IEEE 802.3 specifications.

Q: Can it be used for 4x100G breakout?
A: Some deployments use fiber shuffling to interoperate with 100G DR-class optics, but breakout support depends on the switch ASIC and optical budgeting. Verify with your platform documentation.

Technical Specifications

- Standard: 400GBASE-XDR4
- Form factor: QSFP-DD
- Data rate: 400 Gigabit Ethernet (400GbE)
- Optical lanes: 4 x 100G PAM4 (each direction, parallel SMF)
- Wavelength: 1310 nm
- Reach: Up to 2 km over single-mode fiber
- Connector: MPO-12 (APC) for parallel SMF
- Host interface: 8 x 50G PAM4 electrical on QSFP-DD
- FEC: Requires 400G PAM4 FEC on host (per IEEE 802.3)

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