DAC Cable BlueOptics SFP-25G-CU5M-BL SFP28 5m Black

The BlueOptics DAC Cable SFP-25G-CU5M-BL is a 5 m Direct Attach Copper (DAC) cable with SFP28 connectors on both ends and a black jacket. Designed for short-range, high-speed connections, it supports 25G data transmission and complies with common SFP28 interface requirements. The cable is intended for rack-to-rack or device-to-device connections in data centers and networking closets where a reliable, low-latency copper link is required.

Advantages

This DAC cable provides a low-latency, power-efficient connection for 25G links using passive twinax construction. The fixed-length 5 m cable simplifies rack planning and installation while maintaining signal integrity for short-distance high-bandwidth links. Its SFP28-to-SFP28 terminations ensure direct compatibility with equipment that accepts SFP28 DAC modules, and the black outer jacket offers a discreet appearance in server racks.

Suitable for

• Short-range connections between switches, routers and servers in racks
• High-density top-of-rack and inter-rack cabling in data centres
• Storage systems and network appliances that accept SFP28 DAC modules

Key specifications

• Cable type: Direct Attach Copper (DAC), passive twinax
• Data rate: up to 25 Gbit/s per link
• Connectors: SFP28 on both ends
• Length: 5 m
• Colour: Black
• Application: short-distance electrical 25G links in rack environments

How to use

Insert each SFP28 connector into the appropriate port on the source and destination devices while both devices are powered according to the equipment manufacturer’s installation guidance. Ensure that ports support passive DAC SFP28 modules and that firmware or port settings allow 25G operation. Route the cable to avoid excessive bending and mechanical stress; follow standard rack cable-management practices to maintain airflow and serviceability.

Recommendations

Verify hardware compatibility before deployment and, where possible, test the cable in your specific switch or server model to confirm link establishment at 25G. Avoid sharp bends and kinks, and keep the cable away from heat sources to maintain long-term performance.