CBO InfiniBand Passive DAC Cable QFX-QSFP-DAC-1M-BL — 1 m, QSFP+ to QSFP+

This CBO InfiniBand passive DAC Cable QFX-QSFP-DAC-1M-BL is a 1 m QSFP+ to QSFP+ direct-attach copper assembly engineered for short-distance, high-speed interconnects. Designed to link switches, servers and storage within racks or between adjacent racks, the passive DAC offers a low-latency, energy-efficient alternative to active optics by eliminating separate transceivers. The cable supports InfiniBand and QSFP+ interfaces and is suitable for data center and high-performance computing (HPC) environments where dense, reliable connections are required.

Advantages

The passive design reduces power consumption and heat generation compared with transceiver-based links while maintaining minimal latency. A one-meter length provides a compact, neatly routed connection for within-rack or adjacent-rack setups. Compatibility with QSFP+ ports simplifies deployment across compatible switches, servers and storage systems. The cable’s copper construction offers robust physical durability for repeated insertions and secure link stability in high-density racks.

Suitable for

• Short-distance connections between switches and servers within a rack
• Rack-to-rack links in adjacent cabinets
• High-performance computing clusters requiring low-latency interconnects
• Storage area networks and SAN fabrics using InfiniBand or QSFP+ ports

Key specifications

• Connector type: QSFP+ to QSFP+
• Length: 1 meter
• Media: Direct-attach copper (passive)
• Intended use: Short-reach, high-speed interconnects
• Typical applications: Data center, HPC clusters, SAN

How to use

Install the cable by inserting each QSFP+ end into the corresponding QSFP+ port on your switch, server or storage device until the latch engages. Ensure devices are powered down or follow hot-plug procedures recommended by the equipment vendor when connecting or disconnecting. Verify link status through the device management interface or LEDs to confirm successful negotiation. Use the 1 m length to route the cable cleanly inside racks or between adjacent cabinets to avoid strain on connectors.

Usage recommendations

For reliable performance, use the cable within the specified short-reach environment and avoid sharp bends or excessive pulling. Confirm compatibility with your equipment’s QSFP+ and InfiniBand implementations and check port settings for speed and lane configurations where applicable.