StarTech.com AOC Breakout Cable for Cisco QSFP-4X10G-AOC5M - 5m/16.4ft 40G 1x QSFP+ to 4x SFP+ AOC Cable - 40GbE QSFP+ Active Optical Fiber - 40Gbps QSFP Plus/Transceiver Module Breakout Cable - C9300 C3850 (QSFP4X10GAO5)~AOC Breakout Cable for Cisco QSFP-4X10G-AOC5M - 5m/16.4ft 40G 1x QSFP+ to 4x SFP+ AOC Cable - 40GbE QSFP+ Active Optical Fiber - 40Gbps QSFP Plus/Transceiver Module Breakout Cable - C9300 C3850

Product Overview

AI-generated summary

If you’re deploying Cisco gear that needs that specific **QSFP+ to 4x SFP+ breakout** (and you’re using **active optical cabling** to keep reach and signal integrity happy), this StarTech AOC cable is a pretty sensible choice. At **£117.60 ex-VAT for 5m**, it’s not “cheap”, but it’s also not overpriced for what it does in the real world: fewer optics/transceivers to manage, a clean cabling path between switches, and generally less faffing around than trying to piece together adapters where you don’t fully control compatibility.

Who should buy it: teams with **C9300/C3850-class switches** using breakout-capable ports and needing a short-to-medium run where you’d rather avoid copper limitations. Who should think twice: if you don’t already *know* your exact Cisco part/port breakout mode is supported, AOCs can be a compatibility rabbit hole—so only buy if you’re confident this matches your transceiver/breakout expectations. Also, AOC isn’t ideal if you expect to re-route frequently; once it’s in, it’s a bit of a fixed “link” solution, so factor that into change-heavy environments.