StarTech.com MSA Compliant QSFP+ Transceiver Module - 40GBASE-LR4~MSA Uncoded QSFP+ Module - 40GBASE-LR4 - 40GbE Single Mode Fiber (SMF) Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - LC 10km - 1270nm to 1330nm - DDM

Product Overview

AI-generated summary

For £124.27 ex-VAT, this is a decent “keep the network running” buy if you’re using QSFP+ optics and your switch/storage stack supports MSA-compliant, uncoded LR4-style modules. In the real world, the main value isn’t the headline wavelength range—it’s that it’s plug-in compatible and includes DDM/monitoring, so you’re not flying blind when optics age or lanes start to drift. If you’ve got a fairly standard single-mode 40GbE link and you want predictable interoperability without paying premium pricing, StarTech is a sensible option.

That said, I wouldn’t buy this blindly if you’re in a picky vendor ecosystem or you’ve had “it works until it doesn’t” optics issues before. Even when things are “MSA compliant,” some vendors are particular about coding/compatibility behavior and optics vendor history, especially on managed platforms with stricter optics policies. Also, this isn’t a great fit if you’re trying to standardise across mixed switch brands and expect zero friction—optics are one of those areas where it’s worth checking your exact switch model’s optics compatibility list first. If you’re buying for replacements on known-good gear, though, this is good value for money and should do the job.