CBL-QSFP+56-AOC-3M Supermicro 300cm Cable

High-Density QSFP+ Active Optical Interconnect for Low-Latency Fabrics with the CBL-QSFP+56-AOC-3M

The CBL-QSFP+56-AOC-3M is a QSFP+ to QSFP+ active optical cable engineered for 56Gb/s FDR links where predictable latency and signal integrity are critical to cluster networking. As a 4-lane QSFP+ optical link with integrated transceivers, it enables clean high-speed connectivity between switches and server NICs or between switches inside a rack or cabinet, reducing copper-induced loss and simplifying high-bandwidth port utilization.

In GPU-accelerated and CPU-dense platforms running distributed training, MPI, or storage backends, fabric behavior directly affects job completion time. Deploying the CBL-QSFP+56-AOC-3M supports scalable PCIe-based compute nodes by providing a stable transport layer for east-west traffic, while preserving headroom for multi-rail designs and rapid reconfiguration. The 3m reach targets top-of-rack to end-of-row patching and intra-cabinet routing, keeping optics close to the switching plane and maintaining consistent link characteristics across large node counts.

Why Choose the CBL-QSFP+56-AOC-3M?

The CBL-QSFP+56-AOC-3M delivers an enterprise-ready approach to high-speed QSFP+ interconnects by combining optical performance with operational density. It is suited to scale-out deployments that require repeatable cabling, minimized troubleshooting time, and reliable link bring-up across mixed server generations and switch architectures.

Supermicro designs interconnect components to align with modern data centre standards, emphasizing interoperability, controlled manufacturing tolerances, and deployment consistency across rack-scale systems. This engineering approach supports predictable behavior in HPC and AI fabrics where stability and serviceability are procurement priorities.

Key Applications:

• HPC and InfiniBand-style fabrics
• Low-latency MPI clusters
• AI training and scale-out GPU nodes
• Top-of-rack to server interconnects
• Switch-to-switch rack links

At Happyware - Server Hardware you benefit from non-binding offers tailored to your port counts and rollout phases, and from 24/7 customer service to support fast turnarounds when standardizing on the CBL-QSFP+56-AOC-3M for production cabling.