• Vibrant pink glossy Juniper QDD-2X400G-FR4 QSFP-DD fruit sticker
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Juniper

Juniper QDD-2X400G-FR4 | QSFP-DD800 2x400G FR4 | 1310 nm LAN‑WDM | 2 km SMF | Dual CS | 0–70°C

QDD-2X400G-FR4

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Description

Longer‑reach QSFP‑DD800 breakout module delivering two independent 400G FR4 links over SMF up to 2 km, using compact dual CS connectors for high‑density patching.

Features

- Extended 2 km reach for flexible fabric designs
- High port density with dual CS connectors
- Interoperable 400G FR4 for multi‑vendor environments
- Efficient utilization of 800G uplinks via 2x400G breakout
- CMIS diagnostics for proactive operations

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‑DD800
- Optical type: 2x400G FR4 (LAN‑WDM)
- Fiber type: Single‑Mode Fiber (SMF)
- Wavelengths: 1271/1291/1311/1331 nm per 400G link
- Reach: up to 2 km
- Connectors: Dual CS (one per 400G link)
- Breakout: Two independent 400G FR4 from a single 800G port
- Host FEC: RS(544,514) required on host platform
- Operating temperature: 0 to 70°C (standard)
- Standards: IEEE 802.3cu (400G FR4), CMIS compatible

FAQs

Q: What patch cords should I use?
A: Use SMF patch cords with CS connectors to the module and LC/CS as required by your panel; match OS2 grade for 2 km links.

Q: Is FR4 suitable for campus links?
A: Yes. FR4 supports up to 2 km on SMF, ideal for building‑to‑building or long row‑to‑row links.

Q: Do I need special configuration for breakout?
A: Your 800G port must be configured for 2x400G breakout and appropriate FEC per your switch/NOS.

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