SKU: 83864576677

Lenovo Flex System EN4091 10Gb Ethernet Pass-thru Module

Sale price$1796.98 Regular price$1996.64
Save 10%

Pay in installments of $499.16 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 83864576677

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 11 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Coco
Bozeman, US
★★★★★ 5
they are gorgeous and functional
Color: Ivory
we got these with our cooktop and it is great value and super easy to clean goes in my dishwasher and love how it cooks and cleans they are perfect and gorgeous in white we been using them on the electric stove and they still look brand new. and they cook everything perfectly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
D
Verified Purchase
Daisy cat
Bozeman, US
★★★★★ 5
A great cooking set for just about any meal.
Size: 11-Piece Set
This is a great set of cookware at a very reasonable price. I was looking to make the switch from using non-stick coating to something more natural to minimize the risk of potential toxins. This stainless steel cook set comes with everything that you need to cook just about any meal. As with any stainless cook set, it does require a different approach to cooking, but it's a good tradeoff to know that you're using steel instead of non-stick coating. The quality feels very sturdy, and I feel like these will last me a long time. They are very easy to clean if you soak and use something like bar keeper's friend for anything that is stuck.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
T
Verified Purchase
Travis H
Birmingham, US
★★★★★ 5
Everyday use
Size: 11-Piece Set
I've used these pans for about a year now and they are still holding up great. For everyday abuse they do not faulter. Plus they clean easy. These pans are a great way to get name brand quality without breaking the bank.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
P
Verified Purchase
Phillycheese
Pawtucket, US
★★★★★ 5
Solid design, long lasting, healthy surface for cooking
Size: 11-Piece Set
I bought this exact set in 2021. I am buying more. With the number of reports about the dangers of pans made with non stick coating I decided i would only use cast iron or stainless steel going forward. These are “amazon brand” but I can say after years of use and abuse they are standing the test of time. Multiple moves, toddlers, rough use and they are all fully functional and work great. I LOVE the teardrop handles. It makes it so easy to hold the handle and the hanging holes on the handles are large allowing you to hang it more places on more things you may already have set up in your kitchen. I think anyone who is looking to get away from cheap, chemically pans off the rack should look at this set!! I have 4 years of proof they are not junk but a great long lasting items that seem to be well made. Higher price than buying a $10 pan at walmart but you get so many pots and pans with lids that will last a lifetime. You can also use stainless steel to cook in the oven so more functionality than most pans and pots you buy of the rack. You will just need to learn how to cook with stainless steel pans (check YouTube lots of instruction there).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2025
C
Verified Purchase
Claire53
Waukegan, US
★★★★★ 4
Very pretty cookware
Size: 11-Piece Set
This is nice quality cookware for a great price. I have seen cooking shows that tell how to cook in stainless steel without it sticking. Unfortunately, my food still sticks. If I use a lot of oil, it isn’t so bad. One cooking show host says if you get it real hot before you add the oil, it won’t stick. It sticks. I am trying to get away from using Teflon because they say we have a lot of Teflon in our bodies from our cookware. I still go back to my Teflon a lot. But the cookware is very pretty, a nice weight, and cleans up fairly easily. I do soak the skillet before I clean it. I don’t have to do a lot of scrubbing. The sauce pans are great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2025

recommand products