4-to-1 Round Harness Cable Assemblies are pre-terminated 8-fiber cable assemblies that allow for standards-compliant migration from duplex based applications (e.g. 10G Ethernet) to parallel optics based applications (e.g. 40/100G Ethernet). As well as to connect to a SAN switch or storage array at 8/16/32G speeds. All cable assemblies are factory terminated and tested to deliver verified optical performance and reliability for improved network integrity.