StarTech.com Cisco SFP-H10GB-CU1M Compatible 1m 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

For £25 ex‑VAT for a 1m 10GbE copper DAC, this is the sort of cable you buy when you know exactly what you’re connecting and you want to avoid paying “enterprise tax” for something that’s basically just copper and optics behavior. If you’ve got a close server-to-switch run—rack-to-rack within a metre or so—these passive SFP+ DACs are usually a sensible, low-power way to get reliable throughput without messing around with transceivers and fibre. In UK rack layouts, that “twinax for short hops” sweet spot is real.

That said, I wouldn’t buy it if you need flexibility or long reach, or if you’re trying to mix-and-match brands across finicky switch models. Direct attach copper is straightforward, but compatibility can still be annoying (especially with older Cisco variants or strict optics checks), so if you don’t have a verified match with your exact switch/SFP+ ports, you can waste time and still end up swapping. For a reseller environment, I’d recommend it for customers who already know their ASR/ASR9000-series SFP+ port behavior and want a cheap, clean short-link option—otherwise, fibre (or validated optics) tends to be the calmer choice.