Keep 40 GbE links moving between switches and network components with this QSFP+ module from Black Box. Built for 40GBase-SR optical networking, it delivers a single MPO uplink for environments that need fast, compact connectivity without adding unnecessary complexity. This module is suited to data networking and optical network applications where link density, throughput, and predictable operation matter. The QSFP+ form factor helps conserve switch resources while supporting high-performance Ethernet transport over optical fiber. For infrastructure teams standardizing on Summit X670 Series switches, it provides a direct-fit option for expanding uplink capacity in a controlled, rack-ready deployment. Compared with lower-speed or bulkier alternatives, this module is designed for environments where every port and every watt count. It supports 40 Gigabit Ethernet over optical fiber, helping maintain efficient server-to-switch and switch-to-switch connectivity in enterprise backbones, aggregation layers, and high-demand network segments.