StarTech.com Juniper SFP-1FE-FX Compatible SFP Module - 100BASE-FX - 100MbE Multimode Fiber MMF Optic Transceiver - 100Mb Ethernet SFP - LC 2km - 1310nm - DDM

Product Overview

AI-generated summary

For £35.75 ex-VAT, this is the kind of “just make it work” SFP you buy when you’ve got an older 100MbE fibre link on multimode and you want a cheap, drop-in replacement. StarTech’s compatible optics are generally solid for routine patching—if your switch/layer 2 gear supports standard SFP behaviour, you’ll usually get link up quickly without faffing. The fact it’s multimode fibre with the expected fibre reach (at the class level it’s sold for) means it’s well suited to short office / campus runs where someone’s already using 1310nm multimode optics.

That said, I wouldn’t buy it for anything mission-critical or “we’ll see if it negotiates” scenarios. Compatible modules can be more hit-and-miss with very picky switches or in environments where vendor compatibility/DOM/DDM support gets enforced harder. Also, if you’re actually on single-mode (or your fibres aren’t what you think), £35.75 won’t save you—you’ll just waste time troubleshooting. Best fit: replacing like-for-like 100MbE SFPs in typical UK enterprise cabling runs, especially where you control the hardware at both ends. If you need guaranteed vendor-certified compatibility, or you’re planning upgrades beyond 100MbE, spend a bit more on optics that match the switch vendor’s approved list instead.