DAC cable CBO 100G-QSFP-QSFP-P-0501 100G QSFP28 passive twinax 0.5m

The DAC cable CBO 100G-QSFP-QSFP-P-0501 100G QSFP28 passive twinax 0.5m is a short-reach copper interconnect designed for 100 Gigabit links between QSFP28 ports. This 0.5 metre passive twinax assembly uses QSFP28 connectors on both ends to provide a reliable, low-latency, and energy-efficient connection suitable for within-rack and adjacent-rack deployments in data centers and high-performance networking environments.

Advantages

The passive twinax design delivers low power consumption and minimal signal processing compared with active optical modules, while offering predictable latency and stable performance for short distances. Its compact 0.5 m length reduces cabling clutter and simplifies cable management in dense rack setups. The QSFP28-to-QSFP28 interface ensures compatibility with equipment supporting standard 100G direct-attach copper connections and provides a cost-effective option for high-throughput, short-range links.

Suitable for

• Within-rack interconnects between switches, routers, and servers
• Adjacent-rack connections in data center topologies
• High-performance computing clusters requiring low latency
• Short-range 100G links where low power and cost-efficiency are priorities

Key specifications

• Data rate: 100 Gigabit per second (100G)
• Connector type: QSFP28 to QSFP28
• Cable type: Passive twinax copper
• Length: 0.5 metres
• Designed for short-reach, direct-attach applications

How to use

Install the cable by aligning and inserting each QSFP28 connector into the corresponding port until the latch engages. Ensure both devices are powered and configured for 100G QSFP28 direct-attach copper connections. Avoid excessive bending near the connector ends and maintain the specified 0.5 m routing to prevent undue strain. No additional transceivers or power is required for passive operation; verify link status through your network equipment management interface after connection.

Recommendations

For reliable operation, use this 0.5 m DAC cable for short-distance connections only; do not exceed recommended bend radii and avoid routing alongside high-power cables to minimize interference. Confirm port compatibility and supported link speeds on both devices before deployment to ensure proper 100G operation.