SKU: 58376262502

Lenovo 3M Passive QSFP28 DAC

Sale price$148.02 Regular price$164.47
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Description

Lenovo 3M Passive QSFP28 DACExperience the speed and reliability of 100 Gbit s connectivity with Lenovos 3M Passive QSFP28 Direct Attach Cable (DAC). This high performance copper interconnect is engineered for data centers that demand ultra low latency, stable throughput, and effortless deployment. The Lenovo 3M Passive QSFP28 DAC is designed for short reach interconnections between high density network devicessuch as servers, top of riber switches, storage arrays, and leaf

Experience the speed and reliability of 100 Gbit/s connectivity with Lenovo’s 3M Passive QSFP28 Direct Attach Cable (DAC). This high-performance copper interconnect is engineered for data centers that demand ultra-low latency, stable throughput, and effortless deployment. The Lenovo 3M Passive QSFP28 DAC is designed for short-reach interconnections between high-density network devices—such as servers, top-of-riber switches, storage arrays, and leaf-spine fabrics—providing a plug-and-play solution that minimizes downtime and simplifies data-center cabling. With a precise 3-meter (9.84 ft) length, this DAC optimizes space, prevents cable clutter, and helps you create scalable, future-ready 100G Ethernet topologies without compromising performance or reliability.

  • 3 meters (9.84 feet) in length provides flexible, clean arrangements for rack-to-rack or server-to-switch interconnects in dense data-center environments.
  • QSFP28 to QSFP28 passive copper cable delivers full 100 Gbps bandwidth across four 25 Gbps lanes, ideal for short-reach interconnects with minimal signal loss.
  • Passive design means no external power or active components are required, reducing energy use and simplifying installation while lowering total cost of ownership.
  • Plug-and-play compatibility with Lenovo servers, switches, and networking gear that support QSFP28 100G interfaces, enabling quick rollout and straightforward upgrades.
  • Durable construction and reliable performance with robust QSFP28 connectors and copper media engineered to withstand frequent deployments, hot-swapping where supported, and long-term operating stability.

Technical Details of Lenovo 3M Passive QSFP28 DAC

  • Length: 3 meters (9.84 feet)
  • Cable Type: Passive QSFP28 Direct Attach Copper (DAC) cable
  • Data Rate: 100 Gbps total (4 x 25 Gbps lanes)
  • Connectors: QSFP28 on both ends
  • Application: Short-reach data-center interconnects, server-to-switch, switch-to-switch, and high-density top-of-rack deployments
  • Compatibility: Primarily designed for Lenovo networking hardware, with QSFP28-form factor ensuring broad interoperability across 100G Ethernet environments that support QSFP28

how to install Lenovo 3M Passive QSFP28 DAC

  • Power down or ensure your devices support hot-swapping for QSFP28 DACs, then locate the QSFP28 ports on the devices you intend to connect.
  • Align the connectors with the QSFP28 ports and insert gently until the connectors seat firmly. Do not force or bend connectors at sharp angles.
  • Ensure the cable length and routing prevent excessive bending; maintain the recommended bend radius to protect copper conductors and preserve signal integrity.
  • Power up the devices (or confirm link status if hot-swapping) and check the link LEDs on both ends. A solid or blinking link indicator typically confirms a healthy connection.
  • Run basic network tests to verify throughput and latency. If performance issues arise, verify port configurations, speed settings (100G), and cabling alignment, then re-seat the DAC if needed.

Frequently asked questions

  • What is the Lenovo 3M Passive QSFP28 DAC? It is a 3-meter passive copper Direct Attach Cable with QSFP28 connectors, designed for high-speed 100G Ethernet connections in data centers.
  • What does “passive” mean for this DAC? A passive DAC contains no active electronics or power requirements; it relies on the host devices’ transceivers for signal processing and is intended for short-reach deployments where active components are unnecessary.
  • What devices is it compatible with? It is optimized for Lenovo networking hardware and other QSFP28-compatible devices that support 100G interfaces. Always verify your port speed and compatibility in your device’s documentation.
  • What length is ideal for 100G deployments? For many data-center topologies, a 3-meter DAC is ideal for spine-leaf or top-of-rack layouts where devices are within a few meters of each other and cable congestion is a concern.
  • Is it hot-swappable? In many Lenovo and compatible environments, QSFP28 DACs are hot-swappable if the devices support it. Always follow your equipment’s guidelines for hot-swapping and cabling.
  • Can I mix this DAC with fiber or longer copper cables? No. DACs are intended for short-reach copper interconnects. For longer distances, consider optical transceivers with fiber cables appropriate to your network design.
  • How do I verify bandwidth and latency? Use standard network benchmarking tools (iperf, ethtool, or vendor-specific test suites) to confirm throughput, latency, and error rates across both ends of the link.
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]
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SKU: 58376262502

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John Prelip
Belleville, US
★★★★★ 5
Works with Mac!
Style: 34" WQHD Curved 100Hz USB-C Docking
This monitor is great. I was suprised on how light it was, as I have a large Asus monitor that is very heavy. I am very happy with quality and it works great with a Mac.
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Reviewed in the United States on October 3, 2025
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Dwight Lamar Norwood Jr
Carnegie, US
★★★★★ 4
Just a great monitor
Style: 34" WQHD Curved 100Hz USB-C Docking
What a difference. I purchased this screen to replace an older screen. I knew I would see some differences as the screen was a larger size. What I did not expect was the picture quality. It is exceptional. The colors appear to be accurate. Based on the build quality I expect it to be very durable. It has been very capable of running my games. This has been a great purchase.
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Reviewed in the United States on October 8, 2025
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Amanda North
Battle Creek, US
★★★★★ 1
Didn’t power on, still waiting. . .
Style: 34" WQHD Curved 100Hz USB-C Docking
I received this brand new monitor. It would not power on Amazon did not have any more in stock so it was sent directly to the manufacturer for repair. They have had it for two weeks and are going to have it for another one to two weeks before shipping it back to me and hopefully I’ll actually get to try it out I really hope it’s worth it in the end! Seriously frustrating that a brand new monitor would not even turn on and it’s gonna be at least a month before I even get to try it.
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Reviewed in the United States on August 7, 2025
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Melany
Cuba, US
★★★★★ 5
Amazing product!!
Style: 34" WQHD Curved 100Hz USB-C Docking, Style: 34" WQHD Curved 100Hz USB-C Docking
This is by far the best monitor I’ve owned.
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Reviewed in the United States on July 31, 2025
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azfatboy
Natrona Heights, US
★★★★★ 2
Meh....
Style: 34" WQHD Curved 100Hz USB-C Docking
Milktoast stats--right down the [lower] middle of the line. 1ms reponse time, mediocre 100Hz max refresh, and NO FreeSync support. Hardly expensive, it still is quite a bit more than other monitors with MUCH better specs, but less brand name recognition. I think the only reason it is so expensive is the white treatment. The VESA mount in the back did not fit my VESA plate. One side of the plate sat up on a small ridge of plastic. Not a showstopper, but hardly ideal--or necessary. The bezel (or rather, the DEAD PANEL SPACE between the bezel and the displayable area of the panel) is HUGE. Like 1/4" on the sides, and 1/8" on the top/bottom. If you're going to make a thin bezel, then make an edge to edge display. Otherwise, just give me a frame so that my image displays edge to edge. To me, it looks like the old CRT monitors from the 90s... YECK!
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Reviewed in the United States on April 20, 2025

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