InfiniBand/fibre optic cable BlueOptics JH698A-BL 3 m QSFP Male/Male

The BlueOptics JH698A-BL is a 3 m InfiniBand/fibre optic direct attach cable with QSFP male connectors at both ends. It is designed for short-reach, high-speed interconnects in racks and between adjacent racks, supporting 40GBase-CR4 data rates over a twinax copper medium. The cable follows MSA-compliant QSFP form factor specifications and is suitable for connecting switches, routers, servers and storage systems that accept QSFP-to-QSFP direct attach links.

Advantages

This QSFP-to-QSFP cable provides a low-latency, low-power passive connection for 40 Gbit/s links across a 3 meter distance. Constructed from high-quality twinax copper and compliant components, it supports Ethernet, Fibre Channel, FCoE and InfiniBand protocols where a passive direct attach cable is permitted. The passive design eliminates active transceivers, reducing power consumption and simplifying installation while offering long service life when used within specified environments.

Suitable for

• High-speed switch-to-switch links within racks or between adjacent racks
• Server-to-switch and storage-to-switch interconnects supporting 40G
• Data center applications requiring low latency and low power consumption
• Environments that support passive QSFP direct attach twinax cables

Key specifications

• Length: 3 meters
• Connector type: QSFP male to QSFP male
• Data rate support: up to 40 Gbit/s (40GBase-CR4 compliant)
• Cable type: passive twinax copper (30 AWG)
• MSA-compliant QSFP form factor
• Typical applications: Ethernet, Fibre Channel, FCoE, InfiniBand
• Low power passive operation (no active electronics in the cable)

How to use

Verify that both devices support passive QSFP-to-QSFP direct attach twinax cables and that the system firmware permits passive DACs. Align and insert the QSFP connectors into the corresponding QSFP ports on each device until the latch secures. Do not force the connector; ensure a firm, straight insertion. For removal, release the latch and pull the connector straight out. Route the cable to avoid sharp bends and mechanical stress; respect the manufacturer’s minimum bend radius and avoid contact with hot surfaces or moving hardware.

Recommendations

Use this 3 m passive QSFP twinax cable for short-distance high-throughput links inside racks or between neighboring racks, and confirm compatibility with your switch or server vendor before deployment to ensure support for passive DAC operation.