Cisco WS-X4640-CSFP-E Cisco Catalyst line card / supervisor / service module
Brand: Cisco | Category: Accessories & Components
SKU: CSC-WS-X4640-CSFP-E | Part #: WS-X4640-CSFP-E | MPN: WS-X4640-CSFP-E
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About the Cisco WS-X4640-CSFP-E Cisco Catalyst line card / supervisor / service module
The Cisco WS-X4640-CSFP-E is a hot-swappable line card designed for installation into Catalyst 4500 Series chassis, delivering 40 ports of compact SFP (CSFP) connectivity with dual-channel capability per transceiver. As a purpose-built module within the Cisco Catalyst Switching product line, this enhanced (-E) series card slots directly into the Catalyst 4500 fabric architecture, requiring a compatible Supervisor Engine 6-E, 7-E, or 7L-E to operate. The card supports 100BASE-FX and 100BASE-LX fiber media via CSFP transceivers, enabling flexible, high-density optical connectivity for enterprise campus and data center deployments.
Network engineers and IT infrastructure teams select the WS-X4640-CSFP-E to scale fiber-based switching capacity while maintaining line-rate hardware switching performance across the Catalyst 4500 fabric. The module integrates hardware-based QoS capabilities through supervisor engine integration and supports industry-standard protocols including IEEE 802.1Q, IEEE 802.1D, Rapid PVST+, MST (802.1s), and IEEE 802.3, ensuring seamless interoperability in multi-vendor environments. Full compatibility with Cisco IOS and IOS-XE software (E-series feature set) provides operators with familiar management tools and advanced switching intelligence without requiring separate control cards or additional licensing overhead.
Organizations standardized on Cisco Catalyst 4500 infrastructure can efficiently expand optical switching capacity without chassis replacement. The WS-X4640-CSFP-E delivers the density and performance needed for high-availability network cores and distributed switching architectures. To request a quote for the Cisco WS-X4640-CSFP-E or to discuss integration requirements with your existing Catalyst 4500 deployment, please submit your RFQ through Omnixon Global today.
Technical Specifications
| Brand | Cisco |
| Category | Accessories & Components |
| SKU | CSC-WS-X4640-CSFP-E |
| Part Number | WS-X4640-CSFP-E |
| Condition | New |
| Interface | CSFP |
| Manufacturer Part Number | WS-X4640-CSFP-E |
| Product Family | Cisco Catalyst 4500 Series Line Cards |
| Module Type | 40-Port Compact SFP (CSFP) Line Card |
| Form Factor | Catalyst 4500 Series chassis line card slot |
| Compatible Chassis | Cisco Catalyst 4500 Series (with E-series Supervisor Engine) |
| Compatible Supervisor Engines | Supervisor Engine 6-E, 7-E, 7L-E |
| Number of Ports | 40 |
| Port Interface Type | Compact SFP (CSFP) — dual-channel per transceiver |
| Supported Media | 100BASE-FX, 100BASE-LX (fiber) via CSFP transceivers |
| Switching Mode | Line-rate hardware switching via Catalyst 4500 fabric |
| Supported Protocols | IEEE 802.1Q, IEEE 802.1D, Rapid PVST+, MST (802.1s), IEEE 802.3 |
| QoS Support | Hardware-based QoS via Catalyst 4500 supervisor integration |
| Software Compatibility | Cisco IOS and IOS-XE (E-series feature set) |
| Module Designation | Enhanced (-E) series — required for E-series supervisor compatibility |
| Product Line | Cisco Catalyst Switching |
Frequently Asked Questions about Cisco WS-X4640-CSFP-E Cisco Catalyst line card / supervisor / service module
What does the Cisco WS-X4640-CSFP-E Cisco Catalyst line card / supervisor / service module do?
The Cisco WS-X4640-CSFP-E Cisco Catalyst line card / supervisor / service module is enterprise IT hardware deployed in production data centers, server rooms, and edge sites across the GCC and EMEA region.