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

The SFP28 Direct Attach Cable CBO SFP28-DAC-5M-BC-BL is a 5-meter copper twinax cable with male-to-male SFP28 connectors engineered for 25 Gbit/s short-reach links. It provides a direct electrical connection between compatible SFP28 ports on switches, routers or network interface cards (NICs) without requiring separate optical transceivers. The cable is intended for use in data centre top-of-rack, end-of-row and server rack interconnects where a compact, low-latency and low-power 25G link is needed.

Advantages

This direct attach cable delivers full 25 Gbit/s throughput with minimal latency and reduced power consumption compared with active optical or transceiver-based solutions. Its integrated SFP28 male connectors simplify installation and reduce the number of removable components. The 5 m length supports flexible rack-to-rack or switch-to-server connections while maintaining signal integrity for short-reach applications. The cable’s construction minimizes electromagnetic interference and provides consistent performance in dense networking environments.

Suitable for

• Short-reach 25G links between switches in data centres
• Connections from switches to servers or NICs in server racks
• High-density network topologies requiring low-latency links
• Environments where reduced power and simplified maintenance are priorities

Key specifications

• Cable type: passive twinax copper direct attach cable
• Connector type: SFP28 male-to-male
• Supported data rate: 25 Gbit/s per channel
• Length: 5 metres
• Typical use range: short-reach interconnects within racks or between adjacent racks
• Physical characteristic: shielded construction to limit interference

How to use

Insert each SFP28 connector into the corresponding SFP28 port until the latch engages, ensuring connectors are fully seated and compatible with the host equipment. Use the 5 m cable to span the required distance between network devices while avoiding sharp bends and excessive tension that could damage the cable. No transceiver modules or additional configuration are required for basic link operation beyond verifying link settings on the connected devices. For multi-vendor environments, confirm port compatibility and firmware settings if link negotiation issues arise.

Recommendations

Route the cable to minimize exposure to heat sources and mechanical stress, maintain bend radius recommended by the equipment manufacturer, and verify link status on both devices after installation. For best results in high-density deployments, document connections and consider labelling each end to simplify maintenance and troubleshooting.