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WS-X6904-40G-2T
Cisco 6500 Module WS-X6904-40G-2T C6K 4 port 40 Gigabit Ethe...
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
WS-X6904-40G-2T is a high-performance Ethernet module engineered for modern network infrastructures, delivering an aggregate data rate of 40Gbps through its dual high-speed ports. Designed with QSFP+ connectors, this modular card supports industry standard protocols such as TCP/IP and Fibre Channel, making it compatible with leading routers, switches, and servers in enterprise and data center environments.
Optimized for scalable network expansion and upgrading server interfaces, the WS-X6904-40G-2T seamlessly integrates into existing Cisco platforms. Its plug-and-play installation in modular chassis combined with features like auto-negotiation, jumbo frames, and QoS make it ideal for high-bandwidth applications that demand reliable and efficient high-speed connectivity.
WS-X6904-40G-2T price is $10,027.00, a 75.8% saving from the Cisco list price of $41,400.00. WS-X6904-40G-2T is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-X6904-40G-2T for additional pricing. Browse the full Cisco 6500 Switch Modules series or explore all Cisco products.
In a large enterprise data center running hyperconverged infrastructure, the Cisco Catalyst 6500 WS-X6904-40G-2T C6K module delivers four 40 GbE uplinks with DFC4 hardware acceleration. By aggregating virtualized compute and storage fabrics over a low-latency backbone, IT teams achieve line-rate performance, sub-2 µs latency and non-blocking throughput. Outcome: 4× faster VM migration, 30% higher application I/O, simplified capacity planning and predictable growth at minimal OpEx.
A multinational university deploys the WS-X6904-40G-2T module with DFC4 TrustSec to enforce role-based access across wired and Wi-Fi campus buildings. Leveraging hardware-embedded security policies, the solution dynamically classifies traffic, isolates sensitive labs and automates guest onboarding. Outcome: Zero-touch policy enforcement, 80% reduction in VLAN sprawl and real-time compliance with PCI-DSS and GDPR mandates.
A regional ISP outfits its aggregation ring with the WS-X6904-40G-2T C6K module to terminate customer circuits at 40 Gbps, backed by DFC4 QoS and TrustSec enforcement. This high-density 4-port solution simplifies fiber splicing points, accelerates service turn-up and protects premium business links. Outcome: 50% faster provisioning, 99.999% SLAs, and a scalable platform for future 100 GbE upgrades.
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| WS-X6904-40G-2T |  WS-C6503-E-FAN |  WS-SVC-NAM-1-250S |  WS-F6700-DFC3BXL |  WS-SVC-IDS2-BUN-K9 | |
|---|---|---|---|---|---|
| Product Type | Network Module | Fan Module | Network Module | Network Module / Network Card | Network Module / Network Card |
| Module Type | Ethernet | FAN | Ethernet | SFP+ | Ethernet |
| Form Factor | Modular | Modular | PCIe | PCIe | PCIe |
| Compatibility | Cisco | Cisco Catalyst 6500 Series | Cisco, Juniper, Arista, Dell, HP | Cisco, Juniper, Arista, Dell, HP | Cisco / Juniper / Arista / Dell / HP |
| Supported Features | Auto-negotiation, Jumbo Frames, QoS | Redundant Cooling, High Airflow | Auto-negotiation, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS |
| Product Name | WS-X6904-40G-2T | WS-C6503-E-FAN | WS-SVC-NAM-1-250S | WS-F6700-DFC3BXL High-Performance SFP+ Network Module | WS-SVC-IDS2-BUN-K9 |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
The WS-X6904-40G-2T provides exceptional 40GbE connectivity. It integrates seamlessly into our network, delivering fast, reliable performance with minimal setup.
We upgraded to the WS-X6904-40G-2T, and it's been a game-changer. High-speed 40GbE support boosts our network's performance and stability.
The WS-X6904-40G-2T module delivers excellent performance. It supports high-demand applications and provides fast, stable connections for our growing business.
This module provides reliable and scalable performance. The WS-X6904-40G-2T offers great value, handling heavy traffic with ease and without performance loss.
The WS-X6904-40G-2T has been crucial for improving our network's speed. Fast and reliable, it delivers exceptional performance under high traffic conditions.
The Cisco WS-X6904-40G-2T is a Catalyst 6500 series line card offering four 40 Gigabit Ethernet ports and integrated DFC4 for high-performance switching and TrustSec security.
The WS-X6904-40G-2T is compatible with Catalyst 6500 and 6500-E series supervisors that support DFC4 line cards.
The WS-X6904-40G-2T provides four 40 Gigabit Ethernet ports for high-density uplink and core deployments.
The module delivers up to 320 Gbps of bidirectional throughput, enabling nonblocking high-speed forwarding.
DFC4 refers to the fourth-generation Distributed Forwarding Card, which offloads packet processing for wire-speed performance and advanced features.
With integrated TrustSec capabilities, the module enforces role-based access control and dynamic segmentation at line rate.
Each 40G port on the WS-X6904-40G-2T uses QSFP+ transceivers supporting SR, LR4, and DAC cables for short- or long-reach links.
Under full load, the WS-X6904-40G-2T consumes approximately 180 Watts, with intelligent power management reducing idle power.
Install the module into an available 6500-series slot, secure the captive screws, connect QSFP+ optics, and verify recognition via the supervisor CLI.
Yes, it supports Cisco Virtual Switching System (VSS) and Virtual PortChannel (vPC) for active-active redundancy and scale.
A valid Cisco Network Advantage or Cisco DNA Advantage license unlocks all advanced routing, security, and monitoring features on the module.
It enforces hardware-based TrustSec policies, MACsec encryption, and deep packet inspection to protect data in transit.
Ideal for data center spine-leaf architectures, high-performance core switching, and service provider aggregation.
Cisco offers a limited lifetime hardware warranty plus optional SMARTnet maintenance for 24×7 support and advanced hardware replacement.
Use the supervisor’s show module and show interfaces commands to confirm port status, error counters, and DFC health.
Check QSFP+ transceiver compatibility, verify correct cable type, inspect optical power levels, and review interface logs via CLI.
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