CBO InfiniBand passive copper cable AT-QSFP5CU-BL 5 m QSFP to QSFP, blue

The CBO InfiniBand passive copper cable AT-QSFP5CU-BL is a 5 m QSFP-to-QSFP cable in blue designed for short-range, high-throughput connections between network switches, adapters and storage nodes that support QSFP interfaces. It provides a low-latency direct attach solution for dense rack or cabinet environments where fibre optics are unnecessary. The passive copper design delivers reliable electrical performance for InfiniBand links while keeping power consumption and complexity low.

Advantages

This passive copper cable offers a straightforward installation with QSFP connectors on both ends and requires no external power or active electronics. It reduces latency compared with optical transceivers and fibers for short distances and provides stable signal integrity for high-speed InfiniBand links. The fixed 5 m length and durable blue jacket make cable management and identification in racks and data center cabinets easier.

Suitable for

• Short-range interconnects within racks and between adjacent cabinets
• High-throughput InfiniBand fabrics linking switches, adapters and storage nodes
• Low-latency connections for HPC clusters and compute nodes
• Environments where a simple, cost-effective copper direct attach solution is preferred over fibre

Key specifications

• Cable type: Passive copper direct attach
• Connector type: QSFP to QSFP
• Length: 5 meters
• Color: Blue
• Use case: Short-range, high-speed InfiniBand interconnects

How to use

Connect each QSFP connector to compatible QSFP ports on your switches, adapters or storage devices. Ensure ports support passive copper direct attach cables and that link settings (speed, lanes) match on both ends. Route the cable neatly within the rack or cabinet to avoid sharp bends and mechanical stress. No additional configuration is normally required beyond verifying link status and port negotiation on connected devices.

Usage recommendations

Handle the cable by the connector housings and avoid bending the cable sharply. Use proper cable routing and labeling in cabinets to maintain airflow and simplify maintenance. Verify compatibility with your InfiniBand hardware and firmware versions before deployment, and test link performance after installation to confirm expected throughput and latency.