InfiniBand/fibre optic cable BlueOptics 40GB-C03-QSFP-EN-BL 3 m Male/Male

The BlueOptics 40GB-C03-QSFP-EN-BL is a 3 m InfiniBand/fibre optic cable with QSFP male-to-male connectors designed for high-speed connections in racks and adjacent rack deployments. It supports 40 G data rates over a short 3 m distance and is intended for use with hardware that accepts QSFP-to-QSFP direct attach connections. The cable is presented in blue and is compatible with standard 40GBase-CR4 and InfiniBand link layers when used according to the connected devices' supported protocols.

Advantages

This QSFP male/male cable provides a straightforward physical connection for high-throughput links up to 40 Gbit/s across a 3 m span, minimizing latency and power consumption compared with active optical transceivers. Manufactured to industry MSA guidelines and using high-quality components, the cable is suitable for short, reliable electrical signal transfer in rack and adjacent-rack topologies. The passive design reduces complexity and potential points of failure while offering compatibility with a wide range of switches, routers and storage systems that accept QSFP direct attach cables.

Suitable for

• Interconnecting switches, routers and storage systems within server racks and across adjacent racks
• 40G Ethernet links (40GBase-CR4) and InfiniBand short-reach connections
• High-performance computing clusters and data-center top-of-rack connections

Key specifications

• Length: 3 metres
• Connector type: QSFP male to QSFP male
• Supported data rate: up to 40 Gbit/s
• Cable type: Direct attach twinax / short-reach electrical link suitable for 40GBase-CR4 and InfiniBand applications
• Passive design (no active electronics in the cable)
• Color: blue

How to use

Ensure both devices to be connected support QSFP direct-attach cables and the targeted protocol (40GBase-CR4, InfiniBand or other supported link layers). Insert each QSFP connector into the device QSFP port until the latch engages and verify link status through the device management interface. For best results place the cable in a routing path that avoids sharp bends and mechanical strain. If devices require configuration for 40 G links or specific protocol settings, apply those settings per the device vendor instructions before transferring production traffic.

Usage recommendations

Use this 3 m QSFP direct attach cable for short-range, high-bandwidth links inside racks or between adjacent racks. Avoid exposure to excessive bending, compressive loads or environments outside typical data-center temperature and humidity ranges. Confirm device compatibility for passive twinax connections and, when possible, test the cable in the target hardware before deploying into critical production links.