Arista AOC-Q-4S-100G-4M-ENC 100G QSFP28 to 4x SFP28

Deliver high-density 100G connectivity where copper reaches its limits and discrete optics add unnecessary complexity. The AOC-Q-4S-100G-4M-ENC is an active optical breakout cable that maps one QSFP28 interface to four 25G SFP28 connections, making it a practical fit for leaf-spine access, top-of-rack aggregation, and other short-reach fabric designs. At 4 m, it is sized for controlled data center pathways where predictable routing matters as much as throughput. This cable is built for environments that need more than basic connectivity. Active optical construction helps preserve signal integrity across the run while reducing the cable bulk associated with multiple separate transceivers and patch cords. That means cleaner cable management, fewer touchpoints, and a more disciplined port-to-port deployment model. For teams standardizing on Arista-compatible infrastructure, the breakout format supports efficient port utilization without overcommitting to longer or more expensive optical assemblies. TAA compliance adds procurement flexibility for organizations with sourcing requirements tied to public sector or regulated buying programs. Combined with the 100GBASE-AOC design and 4 m length, this cable is a strong fit when you need dependable short-reach performance, simplified installation, and a clear path from 100G uplink to four 25G endpoints.