StarTech.com Extreme Networks 10065 Compatible SFP Module - 1000BASE-T - SFP to RJ45 Cat6/Cat5e - 1GE Gigabit Ethernet SFP - RJ-45 100m

Product Overview

AI-generated summary

For £15.89 ex-VAT, this is a pretty sensible “keep the network alive” buy *if* you’ve got a compatible switch and you just need a short-term or stop-gap 100m RJ45 copper link. In day-to-day office/warehouse setups, these SFP-to-RJ45 modules are handy because they let you keep using your existing SFP ports without re-cabling or swapping equipment. If you’re an IT reseller supporting lots of generic sites, they’re also one of those parts you’ll be glad you stocked when a port goes down and you need a quick like-for-like replacement.

That said, I wouldn’t recommend buying these blindly for “set and forget” work. Compatibility and optics/port support quirks vary by switch model/firmware, and some vendors are picky about third-party SFPs even when the general standard suggests it should work. Also, because the listing sits in the “USB cables & adapters” category, it’s easy to mis-buy—so make sure you’re actually replacing an SFP 1GbE copper module, not something else. If your switch supports it reliably, it’s good value; if you’re dealing with mission-critical links or a mixed-vendor environment, I’d verify compatibility first (or price in the cost/time of troubleshooting).