SFP28 Direct Attach Cable CBO SFP28-DAC-1M-NA-BL 1 m 25 Gbit/s

CBO SFP28-DAC-1M-NA-BL is a 1 m direct attach copper cable (DAC) designed for 25 Gbit/s links using SFP28 interfaces. It provides a fixed, low-latency physical connection between compatible network devices without the need for separate optical transceivers. The cable is intended for short-reach interconnects in data centers and server racks where space-efficient, power-saving 25 Gbps links are required.

Advantages

The direct attach design eliminates the need for separate SFP28 transceivers, reducing component count and power consumption. Its 1-meter length is optimized for rack- and shelf-level connections, offering predictable signal performance and low latency. The copper construction simplifies installation and troubleshooting while maintaining a cost-effective per-link solution for high-density environments.

Suitable for

• Short-reach connections between switches in the same rack or adjacent racks
• Direct links between servers and network interface cards (NICs)
• Interconnects between transceiver ports supporting SFP28
• High-density top-of-rack and leaf-spine data center deployments

Key specifications

• Data rate: 25 Gbit/s
• Interface: SFP28
• Cable type: Direct attach copper (DAC)
• Length: 1 m
• Typical use: Short-reach, rack-level interconnects

How to use

Insert the SFP28 connectors into compatible SFP28 ports on both devices until they latch securely. Ensure both ends are connected to powered, compatible equipment with matching data rate capabilities. Verify link status through device management interfaces and perform any required port configuration such as enabling 25 Gbit/s operation or adjusting auto-negotiation settings. For safe removal, use the connector latch to disengage the cable before pulling it free.

Recommendations

Use the cable for short-distance, in-rack and adjacent-rack connections where 25 Gbit/s performance and low power consumption are priorities. Avoid tight bends and excessive pulling force; maintain recommended bend radius to preserve signal integrity. Confirm compatibility with equipment vendor guidance when mixing brands.