DAC cable CBO QSFP28-DAC-5M 5m Direct Attach Copper for QSFP28 ports

BlueOptics DAC cable CBO QSFP28-DAC-5M is a 5‑metre Direct Attach Copper (DAC) cable engineered for QSFP28 ports. It provides a fixed copper link for short-range, high-speed connections between switches, routers and servers that support QSFP28. The assembly eliminates the need for separate transceivers by combining the cable and plug-terminated connectors into a single, low-latency electrical interconnect suitable for data centre top-of-rack and rack-to-rack links.

Advantages

This QSFP28 DAC cable offers stable electrical performance with minimal insertion loss and predictable latency, making it suitable for high-throughput environments. The 5 m length balances reach and signal integrity for typical rack and adjacent-rack deployments while keeping power consumption and heat lower than active optical solutions. The plug-and-play form factor enables quick installation and replacement without additional configuration or transceiver modules.

Suitable for

• Short-range QSFP28 interconnects in data centre top-of-rack and end-of-row deployments
• High-bandwidth links between servers and switches or between aggregation devices
• Low-latency connections for trading, HPC, virtualization and storage fabrics
• Cost-effective cabling for environments where optical transceivers are not required

Key specifications

• Connector type: QSFP28-to-QSFP28 direct-attach copper
• Cable length: 5 metres
• Media: passive copper assembly for short-reach electrical links
• Data rates supported: compatible with 100Gbps QSFP28 electrical interfaces
• Latency: low, fixed electrical latency suitable for time-sensitive traffic
• Form factor: pre-terminated, plug-and-play design

How to use

Install the BlueOptics QSFP28-DAC-5M by inserting each QSFP28 connector into the corresponding QSFP28 port on your network devices until the latch engages. Ensure ports are powered down or follow hot-plug guidance from your equipment vendor if connecting live. The cable is ready to use without additional configuration; network devices will recognise the electrical link as a standard QSFP28 interface. For best results, avoid sharp bends and excessive strain on the cable and secure routing inside racks to prevent movement or connector stress.

Usage recommendations

Use this DAC cable for short-distance, high-bandwidth links where electrical interconnects are supported and preferred. Verify compatibility with your switch or server vendor's supported transceiver and cable lists to ensure firmware interoperability. Store and route the cable to avoid kinks, and replace the cable if connectors show physical wear or degraded link performance.