CBO InfiniBand Cable BN-QS-QS-CBL-3M-BL — 3 m QSFP to QSFP blue

Passive InfiniBand/Direct Attach copper cable BN-QS-QS-CBL-3M-BL by BlueOptics is a 3-meter QSFP-to-QSFP interconnect designed for short-reach, high-throughput links in data centers. The cable features QSFP connectors on both ends to provide a direct, low-latency connection between QSFP ports in servers, switches or storage systems. It delivers a straightforward plug-and-play solution for environments that require reliable copper connectivity over a 3 m span.

Advantages

This QSFP to QSFP copper cable offers a cost-effective way to establish high-bandwidth links without the need for optical transceivers. As a passive Direct Attach cable, it reduces power consumption compared with active or optical solutions and simplifies installation with its fixed length and integrated connectors. The blue jacket provides clear visual identification in cable management systems, while the 3 m length balances flexibility and signal integrity for typical rack-to-rack or within-rack connections.

Suitable for

Key specifications

How to use

Insert each QSFP connector into the corresponding QSFP port on the devices to be connected until the connector latches. Ensure both devices are powered off or in a hot-plug supported state as specified by the host hardware before insertion or removal. Route the cable to avoid sharp bends and excessive stress on the connectors; maintain the recommended bend radius for copper DACs to prevent signal degradation. After physical connection, verify link status through the host interfaces and confirm negotiated speed and link health via device management tools.

Recommendations

Prefer this 3 m passive QSFP cable for short-distance, high-bandwidth interconnects where low latency and power efficiency are priorities. Keep cable runs within the same rack or between adjacent racks, secure cables to management channels, and avoid tight bends or kinks. For longer distances or where optical isolation is required, consider using appropriate active cables or optical transceivers with fiber optics.