Build 400G links for the distances they are meant to cover. The eNet Components MMA1Z00-NS400-T-ENC is a compatible QSFP112 transceiver designed for 400GBASE-SR4 Ethernet over OM4 multimode fiber, giving high-density infrastructure teams a practical path to short-reach 400G connectivity. This module is aimed at modern data center fabrics where port density, optical discipline, and predictable link behavior matter. With 850 nm optics, MPO-12 connectivity, FEC support, and DOM, it is suited for environments that need both performance and operational visibility. That combination helps reduce guesswork during deployment and makes it easier to maintain stable links across leaf-spine networks, GPU clusters, and high-throughput aggregation layers. For teams standardizing on NVIDIA Mellanox-compatible hardware, this optic offers a cost-conscious alternative to OEM-branded modules while preserving the technical profile required for production use. It is a focused component for short-reach 400G builds where the right spec matters more than excess margin.