AddOn - SFP (mini-GBIC) transceiver module (equivalent to: Meraki MA-SFP-1GB-SX) - 1GbE - 1000Base-SX - LC multi-mode - up to 550 m - 850 nm - for Cisco Meraki MX100, MX400, MX600, MX80, Cloud Managed Ethernet Aggregation Switch MS420

Product Overview

AI-generated summary

For **£18.05 ex-VAT**, this AddOn SFP (mini-GBIC) is the sort of “get the switch working properly without overpaying” part that’s hard to beat—assuming your environment really matches **1GbE over multi‑mode fiber (LC) for short runs**. It’s a sensible buy for routine spares and straightforward link extensions on the listed Cisco Meraki models, where you just need reliable optics more than you need anything exotic. In day-to-day terms: if the port goes up cleanly and stays stable, you’ll forget about it—until the next time someone nicks a patch lead and needs a fast replacement.

That said, I’d be a bit cautious buying it if you’re not 100% sure you need **multi‑mode, LC, and the right wavelength/range** for your fiber plant. The most common “it doesn’t work” scenario isn’t the reseller supply—it’s mismatched fiber type, a patching mistake, or the wrong optics expectation. Also, if you’re buying for high-uptime sites (or you’re frequently swapping modules), I’d rather you pair this with a quick validation plan (link test + confirm link speed/negotiation behaviour) and keep your documentation tidy—third-party optics can be totally fine, but they’re not something I’d want to gamble on blindly in mission-critical setups.

**Who should buy:** teams maintaining Meraki MX/MS deployments with multi‑mode LC links and who want a cost-effective replacement/spare. **Who shouldn’t:** anyone unsure of their fiber type/wiring standards, or who needs guaranteed “set-and-forget” optics across mixed environments.