Move 200 Gigabit Ethernet traffic over parallel multimode fibre through the QSFP56 200GBASE-SR4 interface. This optical transceiver combines 850 nm operation with an MPO-12 UPC fibre connection and supports links up to 100 m. Its SR4 signalling maps the 200 Gigabit Ethernet connection across four parallel optical lanes, supporting short-reach, high-bandwidth fabric connections where multimode cabling is already installed. AXG102955 fits equipment that accepts a QSFP56 optical transceiver and requires the 200GBASE-SR4 Ethernet interface. Install compatible optics at both ends of a multimode-fibre path using MPO-12 UPC connectivity. The 100 m reach targets links within a data hall, between adjacent rows, or across nearby network zones rather than campus and building-to-building fibre runs. Its pluggable format permits an optical interface to be installed or replaced at the host port without changing the host platform. Select this variant when the link design specifically calls for 200GBASE-SR4 over multimode fibre instead of a single-fibre or longer-reach optical path. The combination of QSFP56 form factor, four-lane SR4 operation, 850 nm optics and MPO-12 UPC interface defines the physical link it serves. Verify host-port support for 200GBASE-SR4 and match the installed fibre plant to the required multimode MPO connection before deployment.