Lenovo 4C57A14177 interface cards/adapter Internal InfiniBand, QSFP56

Product Overview

AI-generated summary

Honestly, this is the kind of item you buy only if you already live in the InfiniBand world. The Lenovo QSFP56 internal adapter is very specific: it’s not something you’ll “figure out later” for general networking. If your environment is already using InfiniBand (common in HPC clusters, storage backplanes, and low-latency compute), then it can be a sensible replacement/upgrade that keeps your existing ecosystem happy. At £1,542 ex-VAT, the price doesn’t feel outrageous for the niche, but it *does* mean you should be confident the host/server is compatible and that your switch/fabric design matches—otherwise you’re paying for the wrong transport.

Who should buy it: teams maintaining Lenovo-based compute/storage nodes where InfiniBand is already the backbone, and you need a like-for-like card to replace a failed unit or expand capacity without reworking the network stack. Who should avoid it: anyone looking for a general-purpose NIC for Ethernet, or anyone planning a new network from scratch. In those cases, you’ll likely be better served (and spend less) with the right Ethernet adapters or a properly planned InfiniBand kit end-to-end. If you tell me what server model and whether you’re on IB switches (and which generation), I can sanity-check whether this is the right class of purchase before you commit.