• Cisco N9K-X9400-8D 8x 400G line card in silver Dell server rack
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Cisco

Cisco N9K-X9400-8D | 8x 400G line card | QSFP-DD | 100/200/400G breakout | for Nexus 9500

N9K-X9400-8D

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Description

Ultra-high-speed line card providing 8 ports of 400GbE via QSFP-DD for next-generation data center fabrics on Nexus 9500 modular chassis. Supports flexible downspeeding and breakout to 2x200G or 4x100G (where supported) to simplify migrations and spine scale-out.

Features

- 8-port 400GbE density for spine and backbone scaling
- QSFP-DD interfaces for broad 400G ecosystem support
- Flexible breakout to 200G and 100G for phased migrations
- Hot-swappable for operational continuity
- Engineered for high-performance, low-latency fabrics under NX-OS

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

- Port count: 8
- Per-port speed: 400 GbE
- Port form factor: QSFP-DD
- Supported speeds: 100/200/400 GbE (with supported optics/cables)
- Breakout support: 2x200G or 4x100G per port (platform support required)
- Chassis compatibility: Nexus 9500 series (9400-series line card family)
- Hot-swappable: Yes
- Operating system: NX-OS

FAQs

Q: Which QSFP-DD optics and cables are supported?
A: Use platform-qualified QSFP-DD optical modules, DAC, and AOC; consult the official compatibility matrix for exact parts.

Q: Can 400G ports be broken out?
A: Yes. With supported breakout modules/cables, ports can break out to 2x200G or 4x100G depending on configuration.

Q: Is any chassis software update required to use 400G?
A: Ensure your NX-OS release supports the line card and desired port speeds as listed in the release notes.

Q: Does this card support hot-swap?
A: Yes. It can be inserted or removed without shutting down the chassis, following maintenance best practices.

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