SKU: 83864576677

Lenovo Flex System EN4091 10Gb Ethernet Pass-thru Module

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Description

Lenovo Flex System EN4091 10Gb Ethernet Pass-thru ModuleThe Lenovo Flex System EN4091 10Gb Ethernet Pass through Module is engineered to connect IBM Flex System Enterprise Chassis directly to external network infrastructures with minimal complexity and maximum reliability. This unmanaged, plug and play solution delivers direct 10Gb Ethernet connectivity from compute nodes to top of rack data center switches, eliminating the need for intermediate switching devices and reducing latency across your

The Lenovo Flex System EN4091 10Gb Ethernet Pass-through Module is engineered to connect IBM Flex System Enterprise Chassis directly to external network infrastructures with minimal complexity and maximum reliability. This unmanaged, plug-and-play solution delivers direct 10Gb Ethernet connectivity from compute nodes to top-of-rack data center switches, eliminating the need for intermediate switching devices and reducing latency across your virtualized and physical environments. Designed for data centers that demand scalable, straightforward networking, the EN4091 provides a compact, efficient way to extend your internal network perimeter to the outside world while preserving performance and predictability.

  • Seamless, high-speed connectivity: The EN4091 enables direct 10Gb Ethernet pass-through from the IBM Flex System Enterprise Chassis to external networks, supporting fast, predictable data transfer for dense compute workloads. By removing intermediate switches from the data path, you gain lower latency and fewer potential points of failure, which translates into improved application responsiveness and faster data access for both virtualization and cloud-centric deployments.
  • Unmanaged, plug-and-play deployment: This module is designed for straightforward integration with minimal setup. No complex configuration or software licensing is required, allowing IT teams to deploy the device quickly for immediate connectivity. The ease of installation helps accelerate data center modernization projects and reduces time-to-value for new or expanded network environments.
  • Direct connection to external top-of-rack switches: The EN4091 provides a direct bridge between the Flex System compute nodes and your external data center infrastructure. This simplified topology reduces cabling complexity, shortens path length, and improves overall network efficiency. It is ideal for environments where throughput consistency and predictable performance are critical for workloads such as database, analytics, and high-performance computing.
  • Durable, data-center-ready design: Built to withstand the rigors of enterprise environments, the EN4091 is engineered for reliable operation within the IBM Flex System chassis. Its compact form factor nests neatly into the chassis backplane, maximizing space utilization in rack cabinets while maintaining accessibility for cable management and future upgrades. This module is designed to support ongoing operations and straightforward maintenance in mission-critical deployments.
  • Scalability and management-friendly networking: While unmanaged, the EN4091 complements Lenovo and IBM virtualization and management ecosystems by providing a stable, predictable network path for external connectivity. Its robust performance supports scalable data center architectures, making it suitable for organizations pursuing growth, consolidation, and modernization without adding complexity to their network fabric.

Technical Details of Lenovo Flex System EN4091 10Gb Ethernet Pass-thru Module

  • Technical details: 10Gb Ethernet pass-through module for the Lenovo/IBM Flex System Enterprise Chassis.
  • Interface: Direct connections between compute nodes and external network infrastructure to enable unmanaged, straightforward data transfer.
  • Form factor: Pass-through module designed for installation in the Flex System chassis backplane, optimized for compact data-center spaces.
  • Management: Unmanaged device; no configuration required for basic operation, suitable for simple, reliable connectivity to top-of-rack switches.
  • Reliability: Built to endure enterprise workloads with consistent throughput, minimal latency, and durable performance in a busy data-center environment.

How to install Lenovo Flex System EN4091 10Gb Ethernet Pass-thru Module

  • Power down procedures: Before installation, follow your data center’s power-down protocol for the Flex System chassis to ensure safe handling and avoid electrical damage.
  • Locate an available chassis slot: Identify an open backplane slot within the IBM Flex System Enterprise Chassis designed to accept a pass-through module. Confirm compatibility with the EN4091 and your chassis model.
  • Insert the module: Gently align and insert the EN4091 into the designated slot, ensuring a secure connection with the chassis backplane. Firmly seat the module to establish a stable interface for the external connections.
  • Cable management and connections: Connect the external data center network to the pass-through ports on the module. Use neat, organized cabling to avoid tangling and to maintain airflow within the cabinet. Route cables to your top-of-rack or core switches as required by your network design.
  • Power-on and verification: Restore power to the chassis and verify that the pass-through module powers up correctly. Check link status indicators on the external switches and within the chassis management console to confirm active connections and healthy performance.
  • Post-install validation: Perform a basic connectivity test between a compute node in the chassis and the external switch. Validate throughput, latency, and error rates to ensure the module meets your workload requirements. Document cabling and slot assignments for future maintenance and upgrades.

Frequently asked questions

  • Q: What is the Lenovo Flex System EN4091 used for? A: It is a 10Gb Ethernet pass-through module designed to connect IBM Flex System Enterprise Chassis directly to external network infrastructure, providing unmanaged, straightforward connectivity without an intermediate switch.
  • Q: Do I need to configure the EN4091 after installation? A: No. The EN4091 is an unmanaged module, meaning it does not require software configuration. It operates as a direct, plug-and-play bridge between compute nodes and external networks.
  • Q: Can I use the EN4091 with any external switch? A: The module is intended to connect to compatible 10Gb Ethernet top-of-rack or data center switches. Ensure your external switch supports 10Gb Ethernet interfaces and that cabling and port availability align with your network design.
  • Q: Is the EN4091 hot-swappable? A: In supported IBM Flex System chassis environments, the module is designed to be inserted and removed with proper procedures—typically while the chassis is powered down—to minimize downtime during maintenance or upgrades.
  • Q: What benefits does a pass-through module provide? A: A pass-through module offers direct connectivity from internal compute resources to external networks, which can reduce latency, simplify network topology, and make cabling easier to manage in environments where an internal switch is not required for certain workloads.
  • Q: How does this module affect network performance? A: By providing a direct 10Gb path to external switches, it minimizes hops and potential bottlenecks, enabling high-throughput performance for demanding applications. Actual performance depends on the external network, cabling quality, and workload characteristics.
  • Q: Do I need to replace existing switches or modify the network layout to use the EN4091? A: Not necessarily. The EN4091 is designed to connect directly to your external switch topology. Depending on your current design, you may maintain existing topologies or modify them to take advantage of simplified, direct connectivity.
  • Q: Where can I find exact specifications or compatibility details? A: For precise specifications, slot compatibility, and supported configurations, refer to Lenovo/IBM official product documentation or your authorized reseller. Technical details may vary by chassis revision and firmware, and stay current with manufacturer updates.
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4.7 ★★★★★
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Tiana
Battle Creek, US
★★★★★ 4
Enchanting
Format: Kindle
"Queen of Roses" by Briar Boleyn is a delightful and refreshing reimagining of the classic tale of King Arthur, with a captivating twist that places the spotlight on Morgan, a character who has often been overshadowed in traditional retellings. Boleyn's creative decision to shift the narrative perspective to Morgan breathes new life into the story, offering readers an intriguing and compelling look at the Arthurian world from an entirely different angle. One of the most commendable aspects of this book is its incorporation of Fae elements, which adds an enchanting layer of magic and mystery to the already familiar Arthurian setting. Boleyn skillfully weaves the world of the Fae into the narrative, creating a captivating backdrop against which the events of the story unfold. This addition not only adds depth to the world-building but also provides ample opportunities for twists and turns that keep readers thoroughly engrossed. However, while the book boasts numerous strengths, it does have one noticeable flaw: the characterization of Morgan. While it is reasonable to create a flawed and complex protagonist, it appears that at times, Morgan's character becomes overly difficult and hard to relate to. Her persistently negative perception of one of the main male characters, who is a potential love interest, despite his efforts to support and assist her, may come across as somewhat irrational and could test the patience of some readers. Striking a balance between a strong, independent character and one who can recognize genuine support and affection could have enhanced the overall reader experience. Nonetheless, the allure of "Queen of Roses" lies in its innovative approach to the Arthurian legend and its skillful blending of fantasy elements into a familiar narrative. Boleyn's evocative prose draws readers into a world where magic, destiny, and fate entwine, leaving us eager to uncover the mysteries that unfold within the pages. I received a free copy of this book via Booksprout and am voluntarily leaving a review.
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Reviewed in the United States on July 28, 2023
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Stephanie
Lowell, US
★★★★★ 5
An action-packed dark romantasy
Format: Kindle
I loved this book! Queen of Roses is an Arthurian-inspired dark romantasy that is the first book in the Blood of Fae series. The story follows Morgan, the princess of Camelot who is rumored to be part fae. Fueled by prejudiced hatred and a mistrust of fae blood, Morgan’s abusive father strips her of her birthright and hands it to her half-brother, Arthur. Instead of becoming queen, Morgan is commanded to join the temple of the goddesses when she comes of age. However, Arthur turns into a psychopathic, power-hungry, fae-hating king as he ages. He develops malevolent plans and commands Morgan to find an ancient weapon with legendary power. Although Morgan is wary of Arthur’s intentions, she embraces the opportunity to go on a journey and potentially change her fate. The story picks up from there and we follow Morgan on her quest to find the ancient relic. It’s full of high stakes adventure, mystery, tension, banter, forced proximity, hidden magic, self discovery, and betrayal. This first installment of the series intricately develops the world building and character development. There’s little romance in this book, but it is evident that it is a slow burn that will continue to develop throughout the remainder of the series. Overall, I loved the world building, the epic fantasy, Morgan’s journey of self discovery, and all of the twists and turns that set the stage for the future installments. I can’t wait to see what happens next!
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Reviewed in the United States on April 7, 2024
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AlynReads
Lexington, US
★★★★★ 4
Arthurian Fae Quest…say less.
Format: Kindle
A fae centered Arthurian tale unlike any I’ve read so far. The author did a great job at descriptive world building, with scenes easily playing out in my minds eye. There was plenty of action, suspense, and even a touch of horror. An enemies to lovers, slow burn romance, a quest, with plot twist and turns aplenty. There was a love triangle, which I’m not usually a fan of but, it played out well in this story line. The FMC, Morgan Pendragon, was so blatantly naïve, yet I typically expect as much in a ‘book one’ of a series, especially one that features a fairly sheltered princess. I was happy to read that in spite of this, she still showed a strong sense of morals, fire, and spine. Now our MMC? Kairos Draven, aka Void’s Edge. Oh, how I’m a sucker for a smoking’ hot grumpy warrior alpha with a witty mouth, and a strong sense of “touch her and die” attitude, so you know who held all my cards. That ending? Just made me swoon all the harder. Now add a battlecat that rivals the size of a horse…and well Ms. Briar Boleyn you have well and truly stolen my heart. I’m excited to see where the story goes from here, and follow along to see more of the characters growth. I went into this story fairly blind, and I think I enjoyed it all the more because of it. Once the story got going, it had me in an absolute chokehold and it was difficult to put down.
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Reviewed in the United States on May 12, 2024
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Ariel
Pawtucket, US
★★★★★ 3
Not a bad start
Format: Kindle
3 stars Thank you Netgalley and Briar Boleyn for the ARC! A camelot/king Arthur retelling with fae. I was hooked by the idea of this book immediately and was eager to jump into this world. • slow burn • enemies to lovers • who did this to you Morgan Pendragon watched her mother die by her father's hand when she was just eight years old, hiding under the bed. Morgan is believed to have the tainted blood of the fae in her veins and is cast aside so that her fathers illegitimate son, Arthur, can become the king. She's seen his cruel treatment of the fae firsthand, so when he sends her on a journey to find a fae weapon she seizes the opportunity to do more with her life. Along the way, she finds more than she could have imagined. I don't know a whole lot about King Arthur and Camelot but I had a lot of fun with this story! The plot has some similar tropes to popular romantasy books (From blood and ash) but there's enough originality here that it doesn't feel like I'm reading a copy. I liked how the fae were different in appearance than what is typical in most fantasy books I've read. In this book they have blue hair, violet skin and a wide range of other characteristics. I thought that the world building was easy to follow and I could easily immerse myself into this world. After reading the blurb I kept wondering when she was going to go on the journey to find Excalibur and it doesn't happen until around the 45% mark. The story is a bit slow at times but starts to pick up once they begin their journey to find Excalibur. The John Wick style Inn was a fun concept that I enjoyed reading about. There are a lot of similarities to this and FBAA and I would have liked to have it be a little more different, but I'm hoping book two will have the story turn into something of its own. Overall I enjoyed reading this story and I'm looking forward to reading book two especially after that ending.
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Reviewed in the United States on May 27, 2023
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Vikki Lynn
Bozeman, US
★★★★★ 5
Unraveling Fate and Fae: A Captivating Journey in "Queen of Roses"
Format: Kindle
"Queen of Roses" by Briar Boleyn is a dark fantasy romance that masterfully combines elements of myth, magic, and romance with a captivating King Arthur retelling infused with a Fae twist. From its intricately woven plot to its compelling characters, this novel delivers an immersive reading experience that will leave readers eagerly anticipating the next installment. At its core, "Queen of Roses" is an enchanting tale of forbidden love and destiny, featuring an exceptionally slow-burn romance that ignites with the intensity of an enemies-to-lovers trope. Against a backdrop of magic and mythical creatures, the story unfolds with tension, banter, and forced proximity, drawing readers into a world filled with love, friendships, self-discovery, and betrayal. While the novel excels in world-building, character development, and plot intricacies, some readers may yearn for a bit more fire and spice in certain aspects of the narrative. However, the promise of future developments in the series offers hope for an even more dynamic and engaging story to come. I know I personally cannot wait to get into book 2. With a cliffhanger ending that leaves hearts racing and minds reeling, "Queen of Roses" succeeds in immersing readers from start to finish. Its dark and twisted fantasy elements are expertly balanced with moments of adventure, action, and unexpected twists, keeping readers on the edge of their seats until the very last page. As the story delves into complex themes and explores the depths of its characters' struggles and desires, it's important to note that "Queen of Roses" may contain triggering content. Readers are advised to check the trigger warnings before diving into this captivating tale. Overall, "Queen of Roses" is a must-read for fans of dark fantasy romance, offering a mesmerizing journey that will leave readers eagerly anticipating the next chapter in the series. With its lush prose, intricate storytelling, and unforgettable characters, this novel is sure to leave a lasting impression on all who venture into its enchanted world. I want to extend a heartfelt shoutout to the author for granting me the opportunity to dive into "Queen of Roses" through NetGalley. It has been an absolute pleasure to explore the captivating world and characters crafted with such skill and imagination. Thank you for entrusting me with this glimpse into your enchanting world.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2024

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