CBO DAC cable Mellanox MC2206128-004-BL 5 m QSFP direct-attach copper

CBO DAC cable Mellanox MC2206128-004-BL 5 m QSFP direct-attach copper is a 5-metre direct-attach copper (DAC) cable with QSFP connectors designed for short-range, high-speed links between switches, servers and other network devices equipped with QSFP ports. The cable delivers a physical connection option that eliminates the need for separate optical transceivers, providing a compact, low-latency link suitable for rack-level and data centre top-of-rack interconnects.

Advantages

The direct-attach copper design ensures low latency and deterministic performance for high-throughput applications while keeping power consumption and cost lower than equivalent optical assemblies. The integrated QSFP connectors offer simple plug-and-play deployment and a slim physical profile that reduces congestion in dense cabling environments. Built for reliable short-range operation, the cable provides consistent signal integrity and a durable connection without additional supporting hardware.

Suitable for

• Top-of-rack or within-rack switch-to-switch links
• Server-to-switch or server-to-server high-speed connections
• Short-reach interconnects in data centres and server rooms
• Environments where low latency and reduced power draw are required

Key specifications

• Length: 5 metres
• Connector type: QSFP to QSFP (direct-attach copper)
• Media: Copper twinax cable
• Intended range: Short-reach, typically within racks or adjacent racks
• Typical applications: 40 Gbps and compatible QSFP-based port speeds (verify device compatibility)
• Form factor: Passive direct-attach cable (check device support for passive DAC)

How to use

Install the cable by inserting each QSFP connector into the corresponding QSFP port on connected devices until the connector latches. Ensure both devices are powered down or that port hot-plugging is supported by your equipment before insertion to avoid transient issues. After connection, verify port status and link speed in the device management interface or LEDs on the equipment. For proper routing, avoid tight bends and maintain recommended bend radius to preserve signal integrity.

Recommendations

Use this DAC cable for short-distance, high-bandwidth connections within racks and between adjacent racks. Confirm QSFP port compatibility and whether passive or active DAC is required by your switches or servers. Keep cables organized with proper strain relief and avoid sharp bends; replace if outer jacket or connectors are visibly damaged.