StarTech.com Cisco SFP-10G-ZR-S Compatible SFP+ Module - 10GBASE-ZR - 10GbE Single Mode Fiber SMF Optic Transceiver - 10GE Gigabit Ethernet SFP+ - LC 80km - 1550nm - DDM Cisco ASR9000, ASR1000, NCS5500

Product Overview

AI-generated summary

At ~£99 ex-VAT, this is a pretty decent “keep-the-network-running” SFP+ for long-reach single‑mode links. If you’ve got a Cisco platform that needs a ZR optic, and you’re not trying to pay the Cisco premium for a like-for-like module, StarTech tends to be a solid middle ground: good enough for real deployments, and the price makes sense when you’re swapping optics in quantity. The DDM support is a practical bonus too—on day-to-day ops it helps you spot trouble early instead of waiting for link flaps to become a mystery.

That said, I’d only buy this if you’re confident about compatibility with your exact Cisco gear and the optics pair you’re using at the far end. “Compatible” modules can still behave differently depending on software/IOS and optics settings, so don’t treat it as plug-and-play if your link is business-critical—test in a controlled window first or confirm with your reseller/network team. Also, ZR optics are for longer single‑mode runs; if you just need short reach, you’ll waste money. For the right use case (single‑mode, long distance, Cisco long-reach requirement) it’s good value—if not, it’s the wrong kind of headache for £99.70.