Cisco - SFP28 transceiver module - 10GbE, 25GbE - 10GBase-CSR, 25GBase-CSR - LC/PC multi-mode - up to 400 m - 840-860 nm - for P/N: A9903-8HG-PEC=, C9300-24H-10A, C9300-24H-10E, C9300-24H-1E, C9500-48Y4C-A-CAP

Product Overview

AI-generated summary

If you’ve got Cisco gear that specifically expects this kind of SFP28 optical module, this is the kind of “it just works” purchase you make to avoid flaky optics and endless troubleshooting. The fibre type and reach are built for a very common use case: short-to-medium multimode links inside data centres, where you want stable performance without reinventing your network. At **£456.76 ex-VAT**, it’s not cheap, but transceivers tend to be where “cheap” often comes back to bite you (DOM behaviour, compatibility checks, or inconsistent optics). This one is aimed squarely at the Cisco part-number ecosystem, so the practical value is lower friction and predictable operation—especially if you’re standardising spares across C9300/C9500 platforms.

Who should buy: teams running the listed Cisco switches and needing a genuine-matched replacement (or spares) for existing multimode fibre runs up to the stated distance. Who should *think twice*: anyone buying purely based on “SFP28 is SFP28” without checking compatibility, multimode type, and link budget—because if your plant isn’t exactly aligned, you’ll spend more time swapping optics than saving money. If you’re still designing new cabling, it may also be worth pressure-testing whether you’re committing to multimode/CSR optics when single-mode might give you more future-proof options.