SKU: 21109112468

Cisco 40Gbase Csr Qsfp Module For Duplex Mmf Transceiver With Lc Connector

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Description

Cisco 40Gbase Csr Qsfp Module For Duplex Mmf Transceiver With Lc ConnectorIntroducing the Cisco 40GBASE CSR QSFP Module for Duplex MMF with LC connector a purpose built, high performance 40 Gigabit Ethernet transceiver engineered to meet the rigorous demands of modern data centers, campus networks, and enterprise infrastructure. This compact QSFP+ module is designed to leverage your existing duplex multimode fiber (MMF) plant, delivering a smooth and cost effective upgrade path from 10G to 40G without a wholesale rebuild of

Introducing the Cisco 40GBASE-CSR QSFP Module for Duplex MMF with LC connector — a purpose-built, high-performance 40 Gigabit Ethernet transceiver engineered to meet the rigorous demands of modern data centers, campus networks, and enterprise infrastructure. This compact QSFP+ module is designed to leverage your existing duplex multimode fiber (MMF) plant, delivering a smooth and cost-effective upgrade path from 10G to 40G without a wholesale rebuild of cabling. Built by Cisco to exacting standards, it blends reliability, scalability, and ease of management to empower network teams to accelerate deployment, simplify maintenance, and future-proof their fabrics for evolving workloads.

Engineered for seamless integration with Cisco ecosystems, the 40GBASE-CSR QSFP Module offers plug-and-play compatibility that minimizes deployment risk and maximizes time-to-value. With its high-density QSFP+ footprint, it fits neatly into standard Cisco 40G-ready switches and routers, enabling dense port configurations that optimize rack space and reduce cabling complexity. The module is purpose-built for 24/7 operation, delivering consistent performance across demanding environments while maintaining a competitive total cost of ownership through efficient power usage and robust thermal characteristics. Whether expanding a data center spine, extending campus interconnects, or upgrading enterprise backbones, this transceiver provides a reliable, scalable, and future-ready solution.

Key advantages of the Cisco 40GBASE-CSR QSFP Module include its ability to preserve investment in existing fiber infrastructure by enabling a scalable upgrade path, its Cisco-grade reliability for continuous operation, and its straightforward management within Cisco devices. The duplex MMF compatibility means you can leverage widely deployed fiber layouts, reducing both the complexity and cost of new installations. The LC connector ensures compatibility with common fiber trunks and breakout scenarios, while the modular design supports rapid field replacements and streamlined maintenance processes. In short, this transceiver is built to deliver high performance, operational stability, and long-term value in dense, modern networks.

  • Seamless upgrade path from 10G to 40G over duplex MMF, allowing you to extend the life of existing fiber assets while meeting rising bandwidth demands.
  • High-density QSFP+ form factor designed for data centers and campus networks, enabling increased port density and cleaner rack layouts.
  • Plug-and-play compatibility with Cisco devices, reducing deployment time, minimizing risk, and accelerating time-to-value during network refreshes or capacity expansions.
  • Robust reliability for 24/7 operations, engineered for stable link integrity, longer MMF reach, and consistent performance under typical data-center conditions.
  • Efficient power usage and thermal performance, optimizing energy consumption without compromising throughput or reliability in dense deployments.

Technical Details of Cisco 40GBASE-CSR QSFP Module for Duplex MMF

  • Form factor: QSFP+ transceiver module designed for 40GBASE-CSR applications.
  • Data rate: 40 Gigabit Ethernet capability suitable for high-speed data center interconnects.
  • Fiber type: Duplex Multimode Fiber (MMF) compatible, leveraging common MMF cabling in enterprise and data-center fabrics.
  • Compatibility: Built to align with Cisco platform requirements for 40GBASE-CSR QSFP modules and optimized for seamless operation within supported Cisco devices.
  • Interface: Standard QSFP+ interface to connect to 40G capable ports on Cisco switches or routers.
  • Environmental and reliability notes: Designed for enterprise-grade performance under typical data-center conditions; exact environmental specs and MTBF vary by SKU and should be confirmed via official Cisco documentation for the specific SKU.

how to install Cisco 40GBASE-CSR QSFP Module for Duplex MMF

  • Prepare the workspace and safety: Power down the host device and any connected equipment following proper ESD precautions. Ensure you have the correct duplex MMF cable with LC connectors ready for installation.
  • Identify the correct port: Locate the 40G-capable QSFP+ port on the Cisco switch or router where the new module will be installed. Confirm that the device and firmware support 40GBASE-CSR modules from Cisco.
  • Remove the existing module (if applicable): If replacing an existing transceiver, carefully disengage and remove it from the QSFP+ slot, preserving the optical connectors and fiber for any re-use where appropriate.
  • Insert the Cisco 40GBASE-CSR QSFP module: Align the new QSFP+ module with the slot and gently slide it in until it is seated and the retention mechanism clicks into place. Do not force the module; ensure it is fully seated and secure.
  • Connect the duplex MMF cable: Attach the LC connector end of the MMF cable to the transceiver’s LC duplex interface and route the fiber to minimize bending and stress. Avoid sharp bends and maintain proper bend radius per fiber specifications.
  • Power up and verify: Reconnect power to the device and all network equipment. Verify link status on the switch/router port and confirm 40G operation. Use the device’s diagnostic tools or management interface to check link integrity, rate negotiation, and error rates.
  • Test performance and alignment: Run basic performance tests (throughput, latency, and error checks) to ensure stable operation under typical traffic patterns. If issues arise, re-seat the module, re-terminate the fiber, or consult Cisco support for device-specific guidelines.
  • Troubleshoot and monitor: Implement ongoing monitoring for link health, bit error rate, and temperature. Maintain firmware and software updates recommended by Cisco to preserve compatibility and security posture.

Frequently asked questions

  • What does 40GBASE-CSR mean, and why choose this module? The 40GBASE-CSR designation identifies a Cisco 40 Gigabit Ethernet transceiver designed for short-reach, duplex MMF deployments. This module enables a scalable upgrade path from 10G to 40G while leveraging your existing fiber plant, delivering high bandwidth with reduced cabling complexity.
  • Is this module compatible with all Cisco devices? The module is designed to work with Cisco platforms that support 40GBASE-CSR QSFP modules. Always verify compatibility with your specific switch or router model and the current firmware version in Cisco’s documentation.
  • What type of fiber and connector does it use? It uses duplex multimode fiber with LC connectors, making it suitable for standard enterprise and data-center cabling that supports MMF infrastructure.
  • What is the typical distance performance? Distance performance depends on fiber type, patching, and link budget within your network design. The module is designed for longer MMF reach relative to 10G deployments, but consult Cisco’s official specifications for precise link-distance expectations for your SKU and fiber grade.
  • How do I ensure reliability in 24/7 operations? Choose Cisco-certified transceivers, deploy proper cooling and power, maintain up-to-date firmware, and monitor link health. The module is engineered for continuous operation with stable link integrity across typical data-center conditions.
  • What maintenance is required after installation? Regular monitoring of link status, error rates, and thermal conditions is recommended. Periodic firmware updates and hardware health checks help preserve performance and interoperability with evolving network demands.
  • Is there a warranty or support available? Cisco products typically come with a warranty and support options through Cisco or authorized partners. Refer to Cisco’s warranty terms for your specific SKU and region for exact coverage details.
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SKU: 21109112468

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Lowell, US
★★★★★ 1
Little glow that does not last
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RachelG
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Reviewed in the United States on March 25, 2025
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Tammy H
Natrona Heights, US
★★★★★ 4
Great value
Size: 2.5in Medium
Love these balls. They are a great price, good quality, durable, really bright glow, bounce higher than my chuck it brand but they are a slight bit smaller. This is why I knocked off one star because they are loose in my ball thrower and more difficult to throw. Other than that, great product!
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Reviewed in the United States on February 21, 2026
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Katherine Bopp
Draper, US
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Glow in the dark squeaky balls for dogs
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She loves them, but I am also going to look at ordering the larger 3.5" ones.
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jewelrycook
Lake Worth, US
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Bouncy, not hard, and good value.
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