StarTech.com MSA Compliant SFP Transceiver Module - 100BASE-FX~MSA Uncoded SFP Module - 100BASE-FX - 100MbE Multi Mode Fiber (MMF) Optic Transceiver - 100Mb Ethernet SFP - LC 2km - 1310nm - DDM

Product Overview

AI-generated summary

For £25.61 ex-VAT this StarTech 100BASE-FX SFP is the kind of no-nonsense, “just make it work” optic you buy when you’ve got older 100MbE kit and need to replace a failed transceiver—fast. The key thing here is fit-for-purpose: it’s for multi‑mode fibre (MMF) and short-ish links around the 2km ballpark. If your switch/media converter has an SFP cage that supports this 100BASE-FX wavelength/fibre type, it’s great value. Also, the inclusion of DDM is genuinely useful in day-to-day operations: you get early warning if optics are degrading rather than waiting for “mysterious” link drops.

I’d avoid it if you’re not 100% sure about your optics requirements. The biggest gotcha with cheap SFPs is not the brand—it’s mismatch: wrong fibre type (SMF vs MMF), wrong reach for your actual plant losses, or a switch that expects a specific vendor/compatibility profile even if the standards sound the same. It’s not the sort of module I’d recommend for mission-critical networks where link behaviour needs to be absolutely deterministic without testing. But for straightforward MMF 100MbE repairs/replacements on compatible switches, this is good budget gear that usually pays for itself quickly. If you tell me your switch model and whether you’re using MMF with LC and roughly how far the run is, I can sanity-check the fit.