SFP28 DAC Cable BlueOptics SFP28-DAC-0.5M-SO 0.5m Male/Male

The BlueOptics SFP28-DAC-0.5M-SO is a 0.5m SFP28 direct attach copper (DAC) cable with male SFP28 connectors on both ends. It is engineered for short-reach, high-speed connections between SFP28 ports, providing a low-latency, energy-efficient link suitable for server-to-switch, switch-to-switch, or within-rack interconnects in data center and enterprise networking environments.

Advantages

The cable supports SFP28 form-factor connectivity for 25 Gbps links while offering lower power consumption and latency compared with active optical alternatives for short distances. Its fixed 0.5 m length reduces signal loss and simplifies cabling in dense racks. The robust male-to-male connectors ensure reliable mechanical mating and stable electrical contact, and the compact, unpowered DAC design eliminates the need for additional transceivers or fiber patching.

Suitable for

• Short-distance 25 Gbps connections between servers and top-of-rack switches
• High-density rack interconnects where low latency is required
• Direct connections inside data center racks and network closets

Key specifications

• Connector type: SFP28 male to SFP28 male
• Length: 0.5 metres
• Supported data rate: 25 Gbps per lane (SFP28 standard)
• Cable type: Direct Attach Copper (DAC)
• Colour: Black
• Power: passive (unpowered) cable

How to use

Insert each male SFP28 connector into compatible SFP28 ports until the latch engages. Use this DAC cable for direct, short-reach links between devices that support SFP28 passive copper connections. Ensure both devices are configured to the same link speed and that port firmware and compatibility lists include passive DAC support. Avoid forcing connectors; confirm proper seating by gently tugging after insertion.

Recommendations

For reliable operation, use the cable within rack or short-patch environments up to 0.5 m and avoid sharp bends or excessive pulling. Verify device compatibility with passive SFP28 DACs in vendor documentation before deployment. Keep connectors free of dust and handle by the connector housing to prevent damage.