This Cisco QSFP-4X10G-AOC3M Compatible QSFP+ active optical breakout cable assembly is suitable for use in storage, data, and high-performance computing interconnectivity between 40G QSFP+ ports and 10G SFP+ ports. It offers a flexible solution to connect within racks and across adjacent racks. The cable contains a QSFP+ module at one end and four SFP+ modules at the other ends. It has been tested and programmed at the factory to ensure the quality, high performance, and compatibility.