StarTech.com Cisco SFP-10G-SR-X Compatible SFP+ Transceiver Module - 10GBASE-SR~Cisco SFP-10G-SR-X Compatible SFP+ Module - 10GBASE-SR - 10GbE Multimode Fiber MMF Optic Transceiver - 10GE Gigabit Ethernet SFP+ - LC 300m - 850nm - DDM Cisco Firepower, ASR9000, C9300

Product Overview

AI-generated summary

For the price, this is one of those “it just works” SFP+ optics that’s ideal when you need short‑reach 10GbE on multimode fiber and you’re trying to keep a rack of spares cheap. If you’re running typical Cisco kit (C9300/ASR/Cisco Firepower lines mentioned) and your existing ports accept Cisco-compatible SFP+ modules, £35.59 ex‑VAT is solid value—especially for lab gear, overflow switches, or replacing failed optics without paying the “vendor tax”. In day-to-day use, the DDM support is a nice reassurance: it helps you spot issues like failing optics or fiber problems before they take the link down unexpectedly.

That said, I’d be cautious if you’re buying these for mission-critical production links without validating compatibility in your specific chassis and firmware mix. With third-party/cross-compatible optics, the risk isn’t that they’re always bad—it’s that certain hardware/versions can be picky and either refuse to initialise or run with warnings. Also, if you’ve got single‑mode runs or you need longer distances than your existing multimode plan supports, don’t buy based on hope: check your fiber type and link budget. In short: great buy for cost-effective short‑reach 10GbE on MMF in broadly compatible Cisco environments; not the first choice when you can’t afford any chance of compatibility drama.