DAC cable CBO SFP28-DAC-0.5M passive copper 0.5 m for SFP28 ports

CBO SFP28-DAC-0.5M passive copper 0.5 m for SFP28 ports is a short direct-attach copper cable engineered for 25 Gigabit Ethernet applications. The cable connects SFP28 ports on switches, routers and servers to provide a low-latency, reliable short-reach link. Its 0.5 metre length is intended for rack-to-rack or device-to-device connections inside data centres and server rooms where a fixed, cost-effective copper interconnect is required.

Advantages

The passive DAC cable offers low insertion loss and minimal latency compared with active or optical alternatives, and requires no external power or configuration. Its fixed length and direct-attach design reduce connector complexity and simplify installation. The cable is compatible with standard SFP28 interfaces and provides a consistent electrical connection for 25GbE links, making it a practical option for high-density networking environments.

Suitable for

• Short-range 25GbE connections between switches and servers
• Top-of-rack and middle-of-row rack interconnects in data centres
• High-density network equipment with SFP28 ports
• Environments where a fixed, plug-and-play copper link is preferred

Key specifications

• Connector type: SFP28 compatible direct-attach copper
• Cable type: Passive copper twinax
• Length: 0.5 m
• Supported data rate: 25 Gigabit Ethernet
• Signal: Electrical (copper) transmission for short-reach links
• Latency: Low, suitable for latency-sensitive applications

How to use

Install the cable by inserting each SFP28 connector into the corresponding SFP28 port on the network devices until the latch engages. No additional drivers, power supply or configuration is required for basic connectivity; devices should auto-negotiate the link at the supported speed. Verify link status in the device management interface and ensure both ends report a 25GbE connection where supported.

Recommendations

For reliable operation, use the cable within short rack distances and avoid excessive bending or tension. Ensure SFP28 ports on both devices support 25GbE over passive DAC copper. Regularly inspect connectors for debris and replace the cable if physical damage is observed.