InfiniBand/fibre optic cable BlueOptics 60177-BL 3 m QSFP Male/Male

The BlueOptics 60177-BL is a 3 m InfiniBand/fibre optic direct attach cable with QSFP male-to-male connectors designed for short-range, high-bandwidth links. It implements a 40GBase-CR4-compatible twinax copper physical connection (passive DAC) with 30 AWG conductors and QSFP to QSFP plugs, delivering stable electrical signal transfer for switches, routers and storage hardware that support 40G direct attach connections. The cable is manufactured to MSA-compliant specifications and is suitable for rack-to-rack and intra-rack connections where low latency, low power and reliable 40 Gbps performance are required.

Advantages

This 3 m QSFP male/male direct attach cable provides a cost-effective method for establishing 40 Gbps links without additional transceivers. Its passive twinax design results in very low power consumption and minimal latency while keeping failure rates low due to the simple construction. Manufactured using industry-grade components and tested for interoperability on major hardware platforms, the cable offers consistent performance for common data center and networking applications. The 3 m length is optimized for connections inside racks and between adjacent racks.

Suitable for (tasks / use cases)

• High-speed links between switches within a rack
• Short-distance connections between adjacent racks
• Server-to-switch and storage-to-switch 40G connectivity
• InfiniBand, Ethernet, FCoE and Fibre Channel short-reach links up to 40 Gbps

Key specifications

• Length: 3 meters
• Connector type: QSFP male to QSFP male
• Data rate support: up to 40 Gbps (40GBase-CR4)
• Cable type: passive twinax copper (Direct Attach Cable)
• Conductor gauge: 30 AWG
• MSA-compliant mechanical and electrical design
• Typical applications: InfiniBand, Ethernet, FCoE, Fibre Channel

How to use

Ensure both devices support passive 40GBase-CR4 direct attach twinax cables and have compatible QSFP ports. Power down equipment if recommended by the manufacturer, then insert each QSFP connector into the corresponding QSFP port until the latch engages. Verify link status through device LEDs or management interfaces and confirm negotiated speed of 40 Gbps. For removal, follow vendor guidelines to avoid damaging ports: release the latch and pull the connector straight out. Do not bend the cable sharply; maintain gentle bend radii to preserve signal integrity.

Recommendations

Use this cable for short-range, high-throughput interconnects in data centers and server rooms. Install in rack channels or cable management trays to avoid excessive stress and maintain minimum bend radius. For reliable operation, pair with hardware platforms that explicitly support passive QSFP DACs and perform interoperability testing in your environment before deploying in production.