Lenovo 1.25m Mellanox QSFP Passive DAC InfiniBand/fibre optic cable Black, Blue

Product Overview

AI-generated summary

If you’re running an InfiniBand setup that actually supports **passive QSFP DAC**, this is the kind of cable you just “buy and forget” about. The appeal of a short **1.25m** passive link is that it’s usually **reliable, low-latency, and cost-effective** versus going down the active/fibre route—especially in a rack where you’re not trying to span long distances. For a UK B2B environment, it’s the sort of spare you want on hand for swaps and maintenance because these links are critical and downtime gets expensive fast.

That said, it’s only worth £90.95 if you’re confident it will work with your exact optics/cabling plan—**passive DACs are not universally compatible**, and InfiniBand hardware is pickier than Ethernet. If you’re unsure whether your end devices require active DAC, a different connector standard, or fibre, don’t buy this “just to try”; you’ll burn time and money. In short: **buy it for data-centre racks where you know the distance and standards**, and **skip it if your deployment is still uncertain or you need longer runs**.