Cisco SFP+ Copper Twinax Cable - Direct attach cable - SFP+ to SFP+ - 3 m - twinaxial - SFF-8436/IEEE 802.3ae - for 250 Series, Catalyst 2960, 2960G, 2960S, ESS9300, Nexus 93180, 9336, 9372, UCS 6140, C4200

Product Overview

AI-generated summary

For the price (£41.71 ex-VAT for a 3m twinax), this is the kind of SFP+ direct-attach cable that makes sense if you already know your ports and distances are going to behave. Twinax DAC is usually the “no nonsense” option for short runs inside a rack or between very close cabinets, and Cisco-rated leads tend to be plug-and-forget in environments where everyone’s running Cisco optics/linecards. If you’re connecting compatible SFP+ ports on devices like Catalyst 2960/2960G/2960S (or similar Nexus/UCS gear on the list) and you don’t want to get dragged into optics compatibility quirks, paying for a known-good DAC is often worth it.

That said, I wouldn’t buy this blindly. If your link distance is even slightly uncertain, or if you’re mixing third-party switches/optics, you can hit “it works… until it doesn’t” issues (link instability, negotiation problems, or warranty/compatibility headaches). Also, 3m is a very specific sweet spot—if you’re going shorter, you’re paying for cable you don’t need; if you’re longer, this won’t be your friend (you’ll end up needing fibre). Overall: buy it when you’re doing short, predictable, same-vendor-friendly SFP+ connections; skip it if you need flexibility, longer reach, or you’re dealing with mixed-brand optics where you’d rather control variables with fibre.