SKU: 86054344371

Cisco QSFP-DD Module

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Description

Cisco QSFP-DD ModuleThe Cisco QSFP DD Module family defines the pinnacle of bandwidth density for modern data centers, offering a scalable path to 400G networking while preserving backward compatibility with established lower speed QSFP pluggable modules and cables. Built for high performance fabrics and dense rack layouts, these modules enable data centers to scale throughput without sacrificing port density, power efficiency, or manageability. Designed to integrate

The Cisco QSFP-DD Module family defines the pinnacle of bandwidth density for modern data centers, offering a scalable path to 400G networking while preserving backward compatibility with established lower-speed QSFP pluggable modules and cables. Built for high-performance fabrics and dense rack layouts, these modules enable data centers to scale throughput without sacrificing port density, power efficiency, or manageability. Designed to integrate seamlessly with Cisco networking platforms, the QSFP-DD portfolio supports flexible deployment models—from cloud-scale deployments to enterprise campuses—each configured to maximize performance, reduce latency, and simplify cable management. Whether you are modernizing a greenfield data center or upgrading an existing infrastructure, Cisco QSFP-DD modules provide the foundation for a future-ready network that can grow with your organization’s evolving bandwidth needs.

  • Maximum bandwidth density: Enables 400G networking in a compact, hot-swappable form factor, delivering unprecedented throughput per port to meet the demands of data-intensive applications, AI workloads, and high-frequency trading environments.
  • Backward compatibility: Maintains a seamless upgrade path by supporting interoperability with legacy lower-speed QSFP pluggable modules and cables, allowing gradual migration without overhauling existing infrastructure.
  • Flexible cabling and reach: Supports a variety of cabling options, including Direct Attach Copper (DAC) and fiber optic cables, with module variants tailored for SR4, LR4, and other standards to optimize reach and cost per bit.
  • Hot-swappable design for minimal downtime: The modular, hot-swappable nature of QSFP-DD components reduces maintenance windows and service disruptions, enabling quick field swaps and upgrades while the network remains online where possible.
  • Cisco-ecosystem optimization: Engineered to work in harmony with Cisco switches, routers, and network management tools, enabling streamlined provisioning, monitoring, and lifecycle management through Cisco DNA Center and compatible OS environments.

Technical Details of Cisco QSFP-DD Module

  • Data rate: 400GBASE QSFP-DD per port, supporting high-bandwidth applications and scalable data center fabrics.
  • Form factor: QSFP-DD (Quad Small Form-Factor Pluggable Double Density) designed for high port density and efficient rack utilization.
  • Lane configuration: 4x100 Gbps lanes, enabling flexible mode configurations and compatibility with multi-lane optical signaling standards.
  • Compatibility: Backward compatible with select lower-speed QSFP pluggable modules and cables to facilitate smooth upgrades within existing infrastructures.
  • Supported cabling options: Supports Direct Attach Copper (DAC) and fiber optic cabling using appropriate transceiver types (e.g., SR4, LR4) depending on the specific module variant.

How to Install Cisco QSFP-DD Module

  • Prepare the system: Power down the device or disable the port as recommended by Cisco maintenance procedures to minimize risk during replacement or upgrade.
  • Inspect the port and module: Verify that the QSFP-DD port and the module are clean and free of debris; handle the module by the edges to avoid contamination.
  • Align and insert: Align the module with the port, ensuring the connector pins are properly seated. Press firmly until the latching mechanism engages and you hear an audible click.
  • Attach the cabling: Connect the appropriate DAC or fiber optic cable to the module’s transceiver ports, securing cables to prevent disconnection during operation.
  • Verify operation: Power on the device (if applicable) and check the port status in the management interface. Confirm link status, port speed, and error counters to ensure a healthy connection.
  • Document and monitor: Record the installation details (module type, serial number, port, and cabling) and monitor performance metrics over time to ensure sustained throughput and reliability.

Frequently Asked Questions

  • Q: What is a QSFP-DD module?
    A: A high-density, quad small form-factor pluggable transceiver designed to deliver 400GBASE data rates in a compact, modular package, using four high-speed lanes for scalable network throughput.
  • Q: Is the Cisco QSFP-DD module backward compatible with older QSFP modules?
    A: Yes. The Cisco QSFP-DD family is designed to maintain backward compatibility with select lower-speed QSFP pluggables and cables, enabling a phased upgrade path without large-scale overhauls to existing infrastructure.
  • Q: What kinds of cables can be used with QSFP-DD?
    A: Depending on the module variant, you can use Direct Attach Copper (DAC) cables or fiber optic cables (such as SR4, LR4) to connect to other devices in the network, optimizing for cost, distance, and power efficiency.
  • Q: How do I determine compatibility with Cisco gear?
    A: Refer to Cisco compatibility matrices and the product’s official documentation for supported transceiver types, port speeds, and firmware requirements. In many cases, you can upgrade in place if the port and chassis support 400GBASE QSFP-DD modules.
  • Q: What should I consider when planning a 400G deployment with QSFP-DD?
    A: Assess current and projected traffic, select appropriate module variants (SR4/LR4 or DAC), verify cabling quality and length, ensure power and cooling are adequate for higher-density transceivers, and align with your network’s management and monitoring capabilities for optimal performance.
  • Q: What is the warranty and support for Cisco QSFP-DD modules?
    A: Warranty and support terms vary by region and product line; consult Cisco’s regional policy and your authorized reseller for precise coverage and service options.
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LJM
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such a good read
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Madison, Lucas, Grey and Rian were made for each other!!! First time reading from this author and I’m not disappointed!!! Absolutely love the Love in this book and couldn’t ask for a better OV!
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… this would have made 5 stars but for 2 reasons. A.) there were quite a few typos; misspelled words, missing quotations, “the his” mistakes, and various signs that maybe a proofread would do good. B.) the writing was quite textbook. Late blooming omega is struggling with her new self, finds a absurdly wealthy pack of alphas, every thing is almost insta-love but she resists, then decides to love herself and let everyone be happy. Rian was my favourite (obviously the author’s favourite too because he got the most page time) but I wish we could see more of his CEO side? He went to work maybe ONCE the entire time. Gray was supposed to be the “growly one” but he turned out to be puppy dog. Lucas was a genius brainiac doctor - but also super alpha with an aggressive hindbrain with a breeding k*nk?? And then there was no actual “breeding”?? Spice 3/5 - normally omegaverse books are super high on messy smut but this was tamer. Romance 3/5 - insta-love that was then resisted because of personal hangup’s Plot 2/5 - weird paced head hopping, showing the same scene from different POV’s that made me feel like it was 2 steps backward, 1 step forward. Humour 4/5 - there were a dozen lines that genuinely made me chuckle out loud Would have been five stars but the lack of proofreading and the predictable plot made me unable to get up to ADORED IT level - four stars is still and official ENJOYED IT, y’all. This isn’t a bad rating. The “Club Heat” has intriguing possibilities so I’m going to give the second one a shot.
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Reviewed in the United States on March 31, 2023
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Ashley Morgan
Lake Worth, US
★★★★★ 5
ABSOLUTELY A MUST for Omegaverse Girls!!!
I ABSOLUTELY LOVE Jillian West and her books!!! I’m so happy I already bought book two and now I have to buy the others for the Assurance Security series!! Not gonna lie Val kind of annoyed me at the beginning but she grew on me!! Her men are chef’s kisses!!! Holt annoys me some but I can let it slide. I already bought part two so I’m going to be reading that in between work phone calls!!!! DON’T TELL MY BOSS 😂😂😂😂
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Carmen Alicea
Lexington, US
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Baby bumps and bodyguards
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Dark, emotional, and unexpectedly tender, Not Ready is an omegaverse romance that delivers found family feels, fierce protectiveness, and a very pregnant heroine who refuses to break. Vale’s on the run from a stalker, but lands in the arms of three private security alphas, cue the swoony tension, fake marriage twist, and slow-burn heat. It’s a little gritty, a little soft, and a whole lot addictive. If you love protective alphas, high stakes, and heroines with quiet strength, this one’s a must-read.
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Shianne Whipple
Omaha, US
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Strong Omegaverse Comfort and a Attention Grabbing Plot
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Jillian West never misses when it comes to Omegaverse, and Not Ready is no exception. This story was the perfect blend of cozy comfort and emotional depth while still delivering a strong plot. Vale is such a powerful heroine, she is strong, capable, and determined but I love that she still allows her pack to love and take care of her. It’s that balance of independence and vulnerability that makes her so relatable. The relationship dynamics were amazing: Bishop is steadfast and completely head over heels, Mercy is skeptical but protective in his own way, and Holt is the hesitant one whose slow fall is so satisfying to watch unfold. The romance hits that sweet spot between insta-love and cautious build, keeping me hooked the entire way through. And that ending. Oh my god, the cliffhanger! I need the next book in this duet immediately.
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Reviewed in the United States on August 28, 2025

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