StarTech.com Cisco GLC-T Compatible SFP Module - 1000BASE-T - SFP to RJ45 Cat6/Cat5e - 1GE Gigabit Ethernet SFP - RJ-45 100m - Cisco Firepower, ASR920, IE2000

Product Overview

AI-generated summary

This is a straightforward, sensible little 1GbE SFP-to-RJ45 module for anyone trying to get copper Ethernet back in a network gear slot without paying Cisco-branded prices. At £35.62 ex-VAT, that’s genuinely good value if you’ve got a compatible switch/router/firewall that supports these optics and you’re dealing with Cat6/Cat5e up to about 100m. For day-to-day reseller work, these are the “replace and move on” parts—handy for repairs, spares, and small expansions where running fibre isn’t worth it.

That said, don’t buy it hoping it’ll “just work” in every port on every device. Compatibility depends on the host platform’s SFP implementation and what it tolerates—some environments are picky about optics. If you’ve got a Cisco Firepower/ASR920/IE2000, you’ll want to double-check your exact model/firmware behaviour and whether it’s officially supported or at least known-good. If you’re in a mission-critical environment, I’d also keep one spare on the shelf, because cheaper optics can be the first thing to fail when there’s a marginal cable/patch panel issue.

**Who should buy:** UK SMEs/MSPs and IT teams standardising on copper where you want cheap, simple 1GbE over RJ45 in SFP cages. **Who should skip:** anyone needing guaranteed compatibility across unknown hardware/firmware, or those expecting better-than-standard performance—if you do that, you’ll spend the cost saving troubleshooting.