Keep 400 GbE fabrics moving with a QSFP112 DR4 optic built for Mellanox platforms. This module is designed for environments where link reach, port density, and consistent optical behavior are critical to maintaining throughput across modern spine-leaf architectures. 400GBASE-DR4 is a strong fit for short-to-medium reach data center interconnects that need more capacity without moving to larger, more expensive transport layers. The QSFP112 form factor supports dense switch designs while preserving the bandwidth required for aggregation, leaf-spine uplinks, and high-performance compute networks. For infrastructure teams, the value is in matching the optic to the workload: enough reach for structured cabling runs, enough speed for 400 GbE uplinks, and a form factor that fits current-generation switching hardware. That balance helps reduce overspecification while still meeting the demands of storage, AI, virtualization, and east-west traffic patterns. Use this module when you need a precise optical component for Mellanox-based 400G deployments and want to keep your fabric compact, fast, and easier to scale.