DAC cable CBO BN-QS-QS-CBL-05M 5m QSFP direct-attach copper cable

BlueOptics DAC cable BN-QS-QS-CBL-05M is a 5-metre QSFP direct-attach copper (DAC) cable designed for short-range, high-speed links between QSFP ports. The fixed-length copper assembly provides a low-latency physical connection suitable for data centre rack-to-rack or intra-rack connectivity. This cable is intended for use where a cost-effective, power-efficient alternative to active optical modules is required and where devices provide QSFP ports that accept direct-attach copper interconnects.

Advantages

The DAC cable offers low latency and stable electrical performance over its 5 m length, eliminating the need for transceivers and reducing both power consumption and component count in a rack. A fixed, factory-terminated QSFP-to-QSFP copper assembly simplifies installation and reduces points of failure compared with discrete module and fibre assemblies. Compatibility with standard QSFP interfaces ensures plug-and-play operation in equipment that supports QSFP direct-attach copper cables.

Suitable for

• Short-range links between switches and top-of-rack or end-of-row switches
• Server-to-switch connections within the same rack or adjacent racks
• High-density data centre patching where low power and low cost are priorities
• Environments requiring low-latency electrical connections for storage and compute clusters

Key specifications

• Cable type: QSFP direct-attach copper (DAC)
• Length: 5 metres
• Connector format: QSFP-to-QSFP fixed assembly
• Application: Short-range, high-speed interconnects in data centres
• Performance: Low-latency electrical link suitable for high-throughput environments
• Form factor: Fixed, factory-terminated copper cable for plug-and-play use

How to use

Insert each QSFP connector into the corresponding QSFP port on the devices to be linked, ensuring that the retainers click into place. No additional drivers or power sources are required beyond the host devices. Observe standard ESD precautions when handling the cable and avoid tight bends or kinks in the cable run; maintain the manufacturer’s minimum bend radius to preserve signal integrity. For optimal results, verify that connected devices support QSFP direct-attach copper cables and configure link settings on the switches or servers as required by the host equipment.

Recommendations

Use this 5 m DAC cable for short, fixed-length connections within racks or between adjacent racks. Avoid running the cable near strong electromagnetic sources, and replace the cable if connector damage or intermittent link issues are observed. For longer distances or where optical isolation is required, consider using active optical modules or fibre-optic assemblies instead.