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Cisco

Cisco WS-C4KX-NM-8SFP+ | 8x 1/10GbE SFP/SFP+ ports, expansion network module, for Catalyst 4500-X

SKU:WS-C4KX-NM-8SFP+

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Description

Eight-port SFP/SFP+ expansion module that adds flexible 1G/10G fiber connectivity to Catalyst 4500-X aggregation switches. Supports mixed 1G and 10G optics per port for seamless migration and high-density uplinks.

Features

- Adds eight flexible 1/10GbE fiber ports
- Supports both SFP and SFP+ optics for gradual migration
- Line-rate performance integrated with system switching fabric
- Per-port autonomy for mixed-speed deployments
- Ideal for high-density uplinks or distribution aggregation

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 populate some ports with 1G SFP and others with 10G SFP+?
A: Yes, the module supports mixed 1G and 10G operation on different ports concurrently.

Q: Are optics included with the module?
A: No. SFP and SFP+ transceivers are sold separately.

Q: Is a separate license required to use these ports?
A: No separate hardware license is required; functionality follows the switch’s installed software license tier.

Q: Does the module support DDM/DOM?
A: Yes, when used with supported SFP/SFP+ optics that provide digital diagnostics.

Q: Is the module hot-swappable?
A: Follow platform guidance; schedule a maintenance window to insert or replace the module to avoid traffic impact.

Technical Specifications

- Port count: 8
- Port type: SFP/SFP+
- Speed per port: 1 GbE or 10 GbE (auto-negotiation per optic capability)
- Optic support: 1000BASE-X SFP and 10GBASE-X SFP+ (SR, LR, ER, CWDM/DWDM as platform-supported)
- Mixed-speed support: 1G and 10G on different ports simultaneously
- Use case: Uplinks/aggregation expansion for Catalyst 4500-X
- Licensing: Operates under the switch’s existing software license (no separate module license)
- Installation: Front-access network module slot
- Transceivers included: No (sold separately)
- Compatibility: Catalyst 4500-X series switches

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