Cisco

Cisco WS-X4908-10GE | 8x 10GbE (X2) half card | high‑density 10G for Catalyst 4900M | X2 optics: SR/LR/ER/CX4

Cisco WS-X4908-10GE | 8x 10GbE (X2) half card | high‑density 10G for Catalyst 4900M | X2 optics: SR/LR/ER/CX4

SKU:WS-X4908-10GE

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Description

High-density 10GbE fiber expansion for Catalyst 4900M with eight X2 ports in a half-card form factor, enabling substantial 10G aggregation within a single chassis. Supports a broad X2 optic portfolio for short to long‑haul links.

Features

- Eight 10GbE X2 ports in a single half‑card for dense 10G scaling
- Media flexibility with SR/LR/ER optics and CX4 copper options
- Hot‑swappable design minimizes maintenance windows
- Ideal for aggregation and high‑throughput interconnects
- Seamless integration with 4900M QoS, security, and L2/L3 features

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: How many of these modules can I install in a 4900M?
A: A 4900M supports two half‑cards simultaneously (or one full‑card), allowing up to two 8‑port X2 half‑cards if power and fabric capacity permit.

Q: Can I mix this with other half‑cards (e.g., 10GBASE‑T)?
A: Yes. The 4900M can host mixed half‑cards, enabling combinations such as one X2 module and one 10GBASE‑T module.

Q: Which X2 optics are compatible?
A: Use Cisco‑compatible X2 optics such as SR, LR, ER, and CX4. Reach and connectors depend on the optic selected.

Q: Is special licensing required?
A: Port activation is hardware‑based; L2/L3 features depend on the 4900M IOS license (IP Base or IP Services).

Technical Specifications

- Ports: 8x 10GbE X2
- Optic form factor: X2 (supports 10GBASE‑SR, LR, ER, and CX4 variants)
- Media and reach: per installed X2 optic (e.g., SR up to 300 m OM3; LR up to 10 km; ER up to 40 km)
- Connector: LC via optical X2; CX4 copper via X2‑10GB‑CX4
- Form factor: half‑card for Cisco Catalyst 4900M (one half slot)
- Operating mode: 10 Gbps per port; subject to chassis fabric characteristics
- Hot-swap: OIR-capable when supported by system software
- Use cases: dense 10G server aggregation, interswitch trunks, core uplinks

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