AddOn - SFP28 transceiver module (equivalent to: Cisco SFP-25G-SR-S) - 25GbE - 25GBase-SR - LC multi-mode - up to 100 m - 850 nm - TAA Compliant

Product Overview

AI-generated summary

For £85 ex-VAT, this AddOn 25GbE SFP28 SR (LC, multimode) module is the kind of “fills the gap” item that makes sense in a UK office or datacentre where you already have multimode fibre and want to keep downtime low. If you’ve got switches that accept the Cisco-equivalent style of module, this is a cost-effective way to add ports for shorter links (up to around the stated distance) without paying the premium for branded optics. In practice, the value is best when you’re replacing like-for-like in an existing run and you trust your fibre plant.

That said, I wouldn’t buy these blindly if the link is mission critical or you’re still validating compatibility. Third-party optics can work flawlessly, but you can occasionally run into quirks with power levels, reach expectations, or how a specific switch negotiates transceivers—so it’s worth testing one module first, especially if you’re mixing vendors. Also, make sure the fibre type and patching are genuinely multimode end-to-end; the “up to 100 m” reality depends heavily on cable grade and link losses. Overall: good buy for straightforward multimode 25GbE replacements; not the best choice if you need guaranteed performance without any testing or you’re unsure about the existing optics/fibre setup.