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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:
- 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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