DAC cable CBO CAB-Q-Q-1.5M-BL QSFP to QSFP direct attach copper, 1.5 m

CBO DAC cable CAB-Q-Q-1.5M-BL QSFP to QSFP direct attach copper, 1.5 m is a 1.5 meter direct attach copper (DAC) cable with QSFP connectors on both ends. It is intended for short-reach, high-speed interconnects between compatible QSFP ports in switches, servers or storage systems. The passive copper construction removes the need for separate transceivers and offers a low-latency, reliable link for within-rack or short rack-to-rack connections when vendor-compatible QSFP interfaces are available.

Advantages

The cable delivers low latency and predictable electrical performance for high-bandwidth applications, while its fixed-length, pre-terminated design simplifies installation and reduces component count compared with transceiver-based solutions. As a direct attach copper assembly, it provides a cost-efficient option for short-distance links and avoids power consumption associated with active optical transceivers. The QSFP-to-QSFP connectors ensure mechanical compatibility with standard QSFP ports and support common multi-lane data rates used in data center environments.

Suitable for

• Short-reach connections between QSFP ports in network switches
• High-speed links between servers and top-of-rack switches
• Within-rack or adjacent-rack interconnects in data centers
• Direct connections for storage systems with QSFP interfaces

Key specifications

• Connector type: QSFP to QSFP
• Cable type: Direct attach copper (DAC), passive
• Length: 1.5 m
• Use case: Short-reach, high-speed interconnects
• Compatibility: Designed for standard QSFP ports supporting multi-lane data rates

How to use

Connect one QSFP connector to the QSFP port on the source device and the other QSFP connector to the QSFP port on the destination device. Ensure ports support the same multi-lane data rate and vendor compatibility where required. Route the cable to avoid sharp bends and mechanical strain; secure it within the rack using standard cable management to maintain signal integrity and airflow. No transceivers or additional configuration are typically required, but verify link status through device management interfaces after connection.

Usage recommendations

Use this DAC cable for short, direct QSFP interconnects inside racks or between adjacent racks. Avoid extended bending radii and excessive pulling force during installation. Verify port compatibility and supported data rates on both devices before deployment to ensure link negotiation and full performance.