Keep high-speed switch fabrics moving with a 40GBASE-SR4 QSFP+ transceiver designed for multimode fiber deployments. The AddOn Networks QSFP-SR4-AO provides a TAA-compliant option for procurement teams that need compatible optics for Arista environments without paying for branded modules. Its QSFP+ form factor supports dense port counts and fast serviceability, making it a practical fit for aggregation layers, leaf-spine links, and short-reach interconnects inside the data center. This module is built for 40 GbE applications where predictable short-range performance matters more than long-haul reach. By using SR4 optics, it aligns with multimode fiber infrastructure commonly found between adjacent racks, top-of-rack switches, and distribution switches. The result is a straightforward way to preserve throughput while keeping cabling and optics costs under control. For teams standardizing on approved third-party transceivers, this model offers a clear balance of compatibility, compliance, and deployment simplicity. It is the kind of part that helps reduce friction in spares planning, refresh projects, and multi-vendor environments where verified interoperability is essential.