Keep 40 GbE traffic moving with a QSFP+ transceiver built for IBM platforms that call for 78P3674 compatibility. This Axiom module is designed for SR4 short-reach optical deployments where you need dependable throughput across fiber without moving to a higher-cost long-distance optic. The QSFP+ form factor supports dense switch architectures, making it a strong fit for top-of-rack, aggregation, and leaf-spine environments that still rely on 40 Gbps links. SR4 optics are commonly used when the goal is to connect equipment within the same data hall or across short structured cabling runs while preserving port density. For infrastructure teams, the advantage is straightforward: match the optic to the workload, keep the network aligned to the target IBM environment, and avoid paying for reach you do not need. This module is suited to production deployments where compatibility and consistent 40 GbE performance matter more than marketing claims.