Lenovo 1.5m Mellanox QSFP Passive DAC InfiniBand/fibre optic cable Black, Blue

Product Overview

AI-generated summary

If you’re already running an InfiniBand fabric and you just need a short, reliable interconnect, this Lenovo 1.5m passive QSFP DAC is exactly the kind of “boring but important” purchase that keeps servers talking without turning your setup into a cabling project. The main value here is simplicity and performance per pound: passive DACs are typically cheaper and lower-latency than alternatives, and for 1.5m runs they’re usually a sweet spot in real data centres where you’re connecting adjacent racks/leaf-spine hops.

That said, £94.74 ex-VAT isn’t pocket change, so it’s only a good deal if you’re confident it matches your hardware and your link distances won’t push you into marginal signal conditions. Passive DACs are less forgiving than managed/fibre options if you end up needing longer runs or if your optics/cables aren’t a perfect compatibility fit. In other words: buy it if your networking vendor support matrix says it’s the right match and your routes really are around that length—otherwise, you’re better off spending a bit more on a more flexible solution to avoid troubleshooting pain later.