CBO SFP28 Direct Attach Copper Cable SFP28-DAC-5M-SO-BL 5 m Male-to-Male 25 Gbit/s

CBO SFP28 Direct Attach Copper Cable SFP28-DAC-5M-SO-BL is a 5 metre passive twinax cable with male-to-male SFP28 connectors and a 25 Gbit/s maximum data rate. It is intended for short-reach, high-bandwidth links in data centre and server rack environments where low latency and energy-efficient operation are required. The cable supports direct connections between SFP28 ports on switches, routers and network interface cards without the need for separate optical transceivers.

Advantages

This SFP28 DAC provides a cost-effective, low-power connection for 25 Gigabit Ethernet links over short distances. Its passive twinax construction reduces latency and power consumption compared with active optical or transceiver-based solutions, while the integrated male-to-male SFP28 plugs enable straightforward hot-plug installation. The 5 m length offers flexible routing within racks and across adjacent rack aisles, maintaining signal integrity for typical data centre layouts.

Suitable for

• Short-reach 25 Gigabit Ethernet links between switches
• Direct connections from servers to top-of-rack switches
• Interconnects between routers and network interface cards (NICs)
• High-density spine-and-leaf data centre deployments
• Environments prioritising low latency and reduced power consumption

Key specifications

• Connector type: SFP28 male-to-male
• Length: 5 metres
• Data rate: up to 25 Gbit/s
• Media: passive copper twinax
• Latency: low, suitable for short-reach high-speed links
• Compatibility: designed for SFP28 ports supporting direct-attach copper
• Installation: plug-and-play, hot-pluggable

How to use

Insert each male SFP28 connector into the corresponding SFP28 port on your network devices until the retention latch engages. Ensure both devices are powered and configured to use a 25 Gigabit Ethernet link; most modern switches and NICs will auto-negotiate the connection when a compatible passive DAC is attached. Route the cable to avoid sharp bends and heavy compression; maintain bend radius recommendations from your hardware vendor to preserve signal integrity.

Recommendations

Use this passive 5 m SFP28 DAC for intra-rack or adjacent-rack connections where the distance does not exceed 5 metres. Verify device compatibility with SFP28 direct-attach copper cables before deployment and keep the cable away from sources of strong electromagnetic interference. For longer runs or different physical layouts consider active DACs or optical transceivers with fibre cabling.