DAC cable CBO QSFP-100G-C1M 100G Passive 1 m - QSFP+ to QSFP+ direct attach

Direct attach copper (DAC) cable CBO QSFP-100G-C1M is a 1-metre passive 100G interconnect featuring QSFP form-factor connectors on both ends. It is engineered for short-reach, high-bandwidth links between compatible QSFP ports in switches, routers and servers without the need for separate optical transceivers. The cable offers low latency and consistent throughput for dense top-of-rack and aggregation deployments in data centre environments, providing a straightforward physical layer solution for 100 Gigabit Ethernet connections.

Advantages

This passive DAC cable delivers a cost-effective and energy-efficient alternative to active optics for short-distance 100G connections. Its direct-attach design reduces component count by eliminating transceivers while maintaining high signal integrity for server-to-switch and switch-to-switch links. The compact QSFP form factor supports high port density in racks and enables simplified cabling and predictable performance in controlled data centre environments.

Suitable for

• Short-reach 100 Gigabit Ethernet links within racks
• Top-of-rack to aggregation switch connections
• Server uplinks to QSFP ports
• High-density data centre interconnects

Key specifications

• Data rate: 100 Gbit/s
• Length: 1 metre (approx.)
• Connector type: QSFP to QSFP (QSFP+ compatible)
• Cable type: Passive direct attach copper (DAC)
• Typical use: Short-reach, within-rack and adjacent-rack connections
• Latency: Low, suitable for high-throughput applications

How to use

Insert each QSFP connector into the corresponding QSFP port on your network devices until the latch engages; ensure both ends are fully seated before powering equipment. Verify that connected devices support passive QSFP DAC connections and the selected 100G link speed in their firmware or configuration. For hot-plug operations, follow the device manufacturer's guidance; avoid excessive bending near the connector heads and route the cable to prevent strain on ports.

Recommendations

Use this 1 m passive QSFP DAC cable for short, high-density connections where distance is limited and power/ cost efficiency is a priority. Maintain appropriate bend radius, avoid kinks, and install in temperature-controlled data centre environments. Confirm compatibility with your switching and server hardware before deployment to ensure optimal link stability.