The standard that outlines the IL performance requirements for angled polyphenylene sulphide rectangular ferrules with 2, 4, 8, and 12 fibers, such as the MPO connector, is the IEC 61755-3-31. MPO (Multi-fiber Push On): MPO is a standard multi-fiber push-pull optical connector interface designed for high-density fiber connections. It provides stable connectivity and fast plug-and-play operation. As multi-fiber. By properly using MPO/MTP® Jumper, Harness, and Trunk Cables, you can standardize your cabling and reduce clutter.