Passive SFP28 DAC copper cable CBO SFP28-DAC-2M 2 m for 25GbE direct-attach connections

CBO SFP28-DAC-2M is a 2-meter passive SFP28 direct-attach copper cable engineered for short-reach 25GbE connections. The assembly includes SFP28-compliant plug modules on both ends to enable direct, low-latency links between switch ports, servers and network appliances without the need for separate transceivers or fiber cabling. Designed for data centre top-of-rack and aggregation links, the passive DAC solution offers straightforward plug-and-play installation and reduced power consumption compared with active optical or active cable alternatives.

Advantages

The passive SFP28 DAC cable provides low latency and consistent electrical performance for short-distance 25 Gigabit Ethernet links. As a copper direct-attach solution it eliminates the need for separate fiber transceivers and fiber patching at short reach, simplifying port management and reducing hardware count. The assembled SFP28 modules are hot-pluggable and interoperable with standard SFP28 cages, offering immediate connectivity with minimal configuration. Passive design means lower power draw and lower total cost of ownership in environments where active optics are unnecessary.

Suitable for

• Top-of-rack connections between switches and servers in data centres
• Aggregation and leaf-spine short-reach links within racks
• Direct connections between network appliances, NICs and switch ports
• Environments where low latency and reduced power consumption are priorities

Key specifications

• Cable type: passive twinax copper direct-attach cable with SFP28 terminated modules
• Data rate: 25 Gigabit Ethernet (25GbE)
• Length: 2 meters
• Connector type: SFP28 form-factor on both ends, hot-pluggable
• Reach: short-reach electrical link optimized for intra-rack and adjacent-rack connections
• Power: passive design with minimal power consumption compared to active modules

How to use

Insert each SFP28 module end into the SFP28 cage of the corresponding switch, server or network appliance until the latch clicks into place. Ensure the connected ports are configured for 25GbE operation as required by your equipment. No additional cabling or transceivers are needed; the assembled cable provides a direct electrical connection. To remove, press the module latch and pull the module straight out. Follow your equipment vendor’s hot-plug guidance to avoid disruption to active links.

Recommendations

Use this passive SFP28 DAC for short intra-rack and adjacent-rack 25GbE links where fiber is not required. Verify compatibility with your switch or server vendor and confirm port speed settings before deployment. Avoid excessive bending or mechanical strain on the cable and keep connectors free of dust and contaminants to maintain signal integrity.