Use this 40 GbE active optical cable when you need a short, tidy interconnect between switches, servers, or storage systems. At 4 m, it is well suited to rack-level and adjacent-rack links where cable management, airflow, and signal integrity matter more than long-distance reach. The QSFP+ interface supports 40 Gigabit Ethernet connectivity, while the active optical design helps keep the assembly lightweight and easier to route than bulky copper alternatives. Cisco compatibility and functional equivalence make it a practical fit for environments that standardize on that platform. TAA compliance adds procurement flexibility for public sector and regulated buyers, and RoHS alignment supports environmental requirements. With lifetime warranty coverage listed in the source data, this cable is positioned for teams that want a dependable short-run interconnect without overbuying for distance they do not need.