Preserve high-speed east-west traffic with an Arista-compatible QSFP+ module designed for 40GBASE-SR4 links. This transceiver supports 40 GbE operation over multimode fiber, giving infrastructure teams a straightforward path to short-reach uplinks between switches, servers, and aggregation layers. For environments where port density and link consistency matter, SR4 optics are a proven choice. They are well suited to short-distance backbone runs inside the data center, where low-latency connectivity and clean interoperability are more important than long-haul reach. The QSFP+ form factor also helps conserve switch space while maintaining the bandwidth needed for virtualization clusters, storage fabrics, and core-to-distribution connectivity. Choose this module when you need a compatible replacement or expansion optic that aligns with existing Arista-based infrastructure. It is built for teams that value predictable deployment, clear compatibility, and the operational confidence that comes from using the right optic for the right distance.