The 400G QSFP112 SR4 represents a cutting-edge optical transceiver solution designed to meet the escalating bandwidth demands of modern data centers and high-performance networks. Built in the compact and hot-pluggable QSFP112 form factor, this high-speed module delivers exceptional 400Gbps data transmission over multimode fiber (MMF) with an extended reach of up to 50 meters, making it ideal for short-range interconnects within racks or across adjacent racks in hyperscale environments. Utilizing an MPO-12 optical interface, the transceiver ensures reliable and high-density connectivity while maintaining optimal signal integrity. The 400G QSFP112 SR4 is optimized for 100Gbps per lane operation using four parallel 100G lanes, providing seamless compatibility with existing 100G infrastructure while enabling smooth migration to higher speeds. Its efficient design supports data center applications such as cloud computing, AI/ML workloads, and storage area networks (SAN), where low latency and high throughput are critical. As a next-generation optical transceiver, it combines advanced modulation techniques with robust thermal management to deliver consistent performance in demanding operating conditions. With its industry-leading power efficiency and compliance with key IEEE and MSA standards, this module offers a future-proof solution for enterprises looking to enhance their network capacity without compromising on reliability or scalability.