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Cisco

Cisco QDD-400G-LR4-S | 400G QSFP-DD | 400GBASE-LR4 | 1310 nm CWDM4 (4λ) | 10 km SMF | Duplex LC

SKU:QDD-400G-LR4-S

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Description

High-density 400GbE LR4 transceiver for long-reach single‑mode links up to 10 km using 4x100G PAM4 over CWDM4 wavelengths and duplex LC. Ideal for data center spine/leaf and metro access where simple duplex cabling is preferred.

Features

- 10 km 400GbE reach over cost‑effective duplex LC SMF
- 4‑lambda CWDM4 design for long‑reach data center and campus links
- QSFP‑DD high‑density form factor for modern 400G platforms
- Standards‑based PAM4 signaling with host RS‑FEC
- DDM/DOM for real‑time link monitoring via CMIS

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

Technical Specifications

- Form factor: QSFP-DD
- Data rate: 400 Gigabit Ethernet
- Optical standard: 400GBASE-LR4 (4x100G PAM4)
- Wavelengths: 1310 nm CWDM4 (4 λ)
- Fiber type: Single-Mode (OS2/G.652)
- Reach: up to 10 km
- Connector: Duplex LC (UPC)
- Host FEC: RS-FEC required on host
- Digital diagnostics: DDM/DOM supported (via CMIS)
- Operating temperature: 0 to +70 °C (standard)

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