DAC cable CBO 470-ABPU 5M QSFP28 direct-attach copper cable, 5 m, QSFP28

Direct-attach copper cable CBO 470-ABPU 5M QSFP28 is a 5-metre high-speed copper interconnect with QSFP28 terminations, engineered for short-reach 100GbE links between compatible QSFP28 ports. The cable provides a fixed-length, low-latency physical connection intended for use inside racks and between adjacent network devices, delivering a straightforward alternative to optical transceivers for top-of-rack and server-to-switch connections in data center environments.

Advantages

This DAC cable offers a cost-efficient solution for short-distance 100GbE links by eliminating separate transceivers and fiber patching. Its direct-attach design reduces power consumption and signal conversion overhead compared with active optical solutions, while the fixed 5 m length simplifies cable management in rack deployments. Compatibility with QSFP28 ports ensures support for high-throughput applications where a copper direct connection is acceptable.

Suitable for

• Top-of-rack switch to server interconnects in data centers
• Adjacent switch-to-switch links within the same rack or neighbouring racks
• Short-reach, high-bandwidth links for 100 Gigabit Ethernet environments

Key specifications

• Connector type: QSFP28 to QSFP28
• Cable type: Direct-attach copper (passive/active as implemented by vendor)
• Length: 5 metres
• Supported data rate: Designed for 100 Gigabit Ethernet
• Typical use: Short-reach rack-level and adjacent-device connections

How to use

Install the cable by firmly inserting each QSFP28 connector into the respective port on the network device until the latch engages. Ensure ports are compatible and powered down if required by your equipment's hot-plug guidance. Once connected, verify link status via device management interfaces and monitor for expected speed negotiation and link integrity. Avoid sharp bends and maintain recommended bend radius to preserve signal performance over the 5 m copper assembly.

Recommendations

For reliable performance, route the 5 m cable within the same rack or between adjacent racks only; avoid long cable runs beyond the intended short-reach application. Observe equipment vendor guidelines for QSFP28 port compatibility and check link settings after installation to confirm 100GbE operation.