StarTech.com Cisco SFP-H10GB-CU2M Compatible 2m 10G SFP+ to SFP+ Direct Attach Cable Twinax - 10GbE SFP+ Copper DAC 10 Gbps Low Power Passive Mini GBIC/Transceiver Module DAC Firepower ASR920 ASR9000

Product Overview

AI-generated summary

If you’ve got a Cisco-ish switch/router with SFP+ ports and you just need a short 10GbE link, this StarTech 2m DAC is the right kind of “boring” purchase. At £28 ex-VAT it’s aggressively priced for a twinax lead, and for 10G over short distances you’ll usually get better value than buying optics and patch leads. It’s also passive, so there’s less to go wrong versus active/optical solutions—meaning fewer headaches during rollout.

That said, I’d only buy this if you’ve confirmed compatibility with your exact equipment model/port type and your firmware tolerances. Some environments are picky about SFP+ vendor IDs or will log warnings even if the link comes up; if you’re in that camp, spend the extra time validating first. It’s also only ideal for short runs (2m is firmly “rack-to-rack” territory). If you need flexibility, longer distances, or you expect frequent moves/rebuilds, DAC is less convenient than pluggable optics.

**Who should buy:** companies standardising on 10GbE copper for short, fixed runs—data halls, adjacent racks, lab builds, and cost-conscious rollouts. **Who should avoid:** anyone who can’t be bothered to verify SFP+ compatibility, or anyone expecting to stretch beyond short in-rack distances.