DAC cable CBO QSFP to 4x10G SFP+ CBL-QSFP-4x10GSFP-PASS-1M 1 m passive direct attach

Direct attach copper (DAC) cable CBO QSFP to 4x10G SFP+ CBL-QSFP-4x10GSFP-PASS-1M is a 1-meter passive breakout cable featuring a single QSFP connector on one end and four 10G SFP+ connectors on the other. It provides a straightforward electrical connection for short-range links in rack environments, enabling a 40G port to be split into four independent 10G channels. The passive construction minimizes power consumption and simplifies installation for top-of-rack and aggregation switch interconnects.

Advantages

This passive DAC cable offers low-latency, energy-efficient connectivity without the need for optical transceivers or additional power. The compact one-meter length reduces cable clutter in dense rack deployments and the breakout design enables flexible port mapping between high-density QSFP ports and 10G SFP+ interfaces. Passive copper construction also typically provides a cost-effective solution for short-reach links compared with active or optical alternatives.

Suitable for

Key specifications

How to use

Insert the QSFP connector into the 40G QSFP port on the switch or device and insert the SFP+ connectors into the corresponding 10G ports on the target devices. Ensure the host ports support breakout operation (40G to 4×10G) and that the devices are powered down or have hot-swap capability if required by your hardware vendor. Verify link status and negotiate speed on each 10G interface after connection. Avoid excessive bending and keep the cable clear of hot components to maintain signal integrity.

Recommendations

Use this passive DAC cable for short-distance, intra-rack connections where energy efficiency and low latency are priorities. Confirm switch and server compatibility for QSFP-to-4xSFP+ breakout and observe vendor guidelines for supported breakout modes and maximum cable lengths.