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Cisco

Cisco QDD-400G-DR4-S | 400G | QSFP-DD | DR4 | 1310 nm | 500 m | MPO-12

SKU:QDD-400G-DR4-S

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Description

400G DR4 QSFP-DD optical transceiver for up to 500 m over single-mode fiber using 1310 nm parallel optics and MPO-12 connectivity. Designed for high-density data center fabrics with straightforward 4-lane deployment and standards-based interoperability.

Features

- High-density 400G parallel optics
- Standards-based interoperability
- Scalable 4x100G breakout option
- Efficient 1310 nm SMF operation
- Ideal for short-reach data center fabrics

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: Can I break this 400G DR4 into four 100G links?
A: Yes. With an MPO-12 to 4x duplex LC harness and compatible 100G DR optics on the remote end.

Q: Which fiber should I use?
A: OS2 single-mode fiber is required for DR4 modules.

Q: Is APC mandatory on the MPO connector?
A: APC is commonly used and recommended to minimize back reflection; follow your transceiver and cabling vendor guidance.

Q: Do I need FEC enabled?
A: Yes, KP4 FEC on the host is required to meet the BER specifications.

Technical Specifications

- Form factor: QSFP-DD
- Standard: IEEE 802.3bs 400GBASE-DR4
- Wavelength: 1310 nm (parallel)
- Fiber type: Single-mode (OS2)
- Reach: up to 500 meters
- Connector: MPO-12 (APC recommended)
- Lane configuration: 4x100G PAM4
- Breakout capability: Supports 4x100G DR topologies with suitable breakout cabling
- FEC: KP4 required on host
- Operating temperature: 0 to 70°C (standard)
- Digital diagnostics: Supported

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