StarTech.com Cisco SFP-H10GB-CU5M Compatible 5m 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

At £41.58 ex-VAT for a 5m passive DAC, this is exactly the kind of “good enough, works reliably” cable that makes life easier in a UK switch room. Passive copper DACs like this are often the best value when you’re connecting two devices that are close enough—think top-of-rack to rack switches, or fixed uplinks where you don’t want to pay for optics. The fact it’s presented as compatible with Cisco SFP+ gear is also a plus for resellers and IT teams who just need it to be plug-and-play without playing firmware games.

That said, I wouldn’t buy this if you’re unsure about link requirements or if the distance is borderline—DACs are usually sensitive to optics length limits and signal quality, and if you’re pushing the envelope you’ll see link flaps or poor stability. Also, if you’re mixing vendors or you’ve got older/quirky SFP+ implementations, I’d validate in advance (at least with a short test) because “compatible” doesn’t always mean “guaranteed accepted everywhere.” Who should buy: teams running 10GbE over short, fixed distances where reliability and cost control matter. Who shouldn’t: anyone needing flexibility for longer runs or who can’t tolerate any “will it work in this specific module?” risk.