DAC Cable CBO SFP28-DAC-0.5M 0.5m Passive SFP28 Direct Attach Cable

Passive DAC cable CBO SFP28-DAC-0.5M is a 0.5 meter direct attach copper cable engineered for short-reach 25GbE connections. The cable integrates two SFP28 connectors on a fixed copper assembly to enable direct server-to-switch or switch-to-switch links without separate transceivers. Its compact length and passive design reduce power consumption and latency compared with active modules, making it suitable for high-density network environments such as top-of-rack and server-rack interconnects.

Advantages

The SFP28 passive DAC provides a straightforward, low-latency 25GbE connection with minimal power draw and simplified deployment because no separate optical transceivers are required. Its short 0.5 m length minimizes signal loss and crosstalk in dense rack environments while maintaining consistent throughput for latency-sensitive applications. The cable's form factor fits SFP28 ports and is compatible with equipment that supports SFP28 direct-attach copper links, enabling cost-effective, space-saving cabling for short interconnects.

Suitable for

• Top-of-rack (ToR) switch to server connections in data centers
• Switch-to-switch links within the same rack or adjacent racks
• High-density networking panels and server blade interconnects
• Latency-sensitive applications that benefit from copper DAC links

Key specifications

• Connector type: SFP28 to SFP28
• Cable type: Passive direct attach copper
• Nominal length: 0.5 m
• Data rate: 25 Gigabit Ethernet (25GbE)
• Typical use: Short-reach, intra-rack interconnects
• Power profile: Low power consumption due to passive design

How to use

To install, insert each SFP28 connector into the corresponding SFP28 port on your switch, server, or network device until the latch engages. Verify that both endpoints support passive SFP28 DAC links and that port settings match the desired 25GbE configuration. No additional transceivers or fiber patching are required. For cable removal, depress the connector latch and pull the cable straight out to avoid stressing the port.

Recommendations

Use this 0.5 m passive DAC for short intra-rack connections where reliable 25GbE bandwidth and low latency are required. Avoid routing the cable through hot or obstructed airflow paths for optimal thermal behavior and keep the cable clear of sharp bends; maintain gentle bend radii to preserve signal integrity.