StarTech.com Cisco SFP-H10GB-CU1-5M Compatible 1.5m 10G SFP+ to SFP+ Direct Attach Cable Twinax - 10GbE SFP+ Copper DAC 10 Gbps Low Power Passive Mini GBIC/Transceiver Module DAC Firepower ASR9000 ASR1000

Product Overview

AI-generated summary

At £33.52 ex‑VAT for a 1.5m 10GbE SFP+ DAC, this StarTech cable is exactly the sort of “no drama” solution you buy when you know your patching distance and you want to avoid paying transceiver prices twice. Passive copper DACs are great value in racks and top-of-rack/adjacent gear runs: they’re usually plug‑and‑play, they consume less power than optics, and they generally save time on installs because you’re not dealing with fiber cleanliness, spares, or budget for optics. For short links like server-to-switch, switch-to-switch within a room, or lab/testing environments, it’s a sensible pick.

That said, I wouldn’t buy it blindly if you’re expecting broad compatibility across every Cisco platform and every optics policy in the field. Some Cisco ecosystems are fussier than others, and “compatible” DACs can sometimes trigger issues like negotiated link quirks, optics compatibility warnings, or outright refusal depending on exact model/firmware. If you’re deploying at scale, the best practice is to confirm with your switch model/OS and ideally test one link before committing bulk spend. If your environment is stable and the run is truly within 1.5m, this is good value; if you need guaranteed behaviour across mixed hardware or longer/uncertain routing, you’re better off with optics or a more directly supported part number.