DAC cable CBO QSFP28 direct attach 5 m for Huawei 02311KNY

Direct attach copper (DAC) cable CBO QSFP28 5 m for Huawei is a passive high-speed interconnect designed for short-reach links between QSFP28 ports. The cable supports 100 Gigabit Ethernet-class connections and is intended for reliable, low-latency transmission in data centre top-of-rack, server-to-switch or switch-to-switch environments. Its QSFP28 form factor provides compatibility with equipment that accepts QSFP28 modules and is suitable for dense rack cabling where space and signal integrity are important.

Advantages

The CBO QSFP28 direct attach cable provides low-latency electrical signalling and predictable performance over a 5-metre reach. As a passive copper solution, it requires no additional power or transceivers, which reduces total component count and simplifies installation. The integrated QSFP28 connectors ensure secure mating with compatible network ports and help maintain signal integrity in high-density cabling environments. The cable's construction is built for short-distance high-bandwidth connections, offering cost-effective, energy-efficient link consolidation in rack and switch deployments.

Suitable for

• Short-reach 100GbE links between servers and top-of-rack switches
• Switch-to-switch aggregation within the same rack or adjacent racks
• High-density data centre cabling where QSFP28 ports are available
• Environments requiring low-latency and predictable electrical performance

Key specifications

• Cable type: Direct attach copper (DAC)
• Connector type: QSFP28 to QSFP28
• Length: 5 metres
• Data rate: Suitable for 100 Gigabit Ethernet links
• Transmission: Passive electrical twinax design for short-reach links
• Typical use: Server-to-switch and switch-to-switch connections in racks and data centres

How to use

Insert each QSFP28 connector into the corresponding QSFP28 port on the network devices until the latch engages. Verify link status through device LEDs or management interfaces and confirm link speed and lane configuration in the switch or server OS. For reliable operation, route the cable to avoid tight bends and excessive mechanical stress; maintain the specified minimum bend radius and avoid kinking. When removing the cable, depress the connector latch and pull straight to avoid damaging the port or connector.

Recommendations

Use the DAC cable for links within the same rack or adjacent racks where 5 m reach is sufficient. For longer distances, consider active copper or optical transceivers with appropriate fiber cabling. Ensure firmware and port compatibility on Huawei equipment and verify port configuration for 100GbE or compatible aggregated lane modes before deployment.