DAC cable CBO 9370CM40GCAB1-0030 40G QSFP direct-attach copper

The BlueOptics DAC cable CBO 9370CM40GCAB1-0030 is a passive direct-attach copper (DAC) cable that provides a 40G QSFP connection for short-range, high-throughput links between compatible network devices. Intended for rack-to-rack and within-rack interconnects in data center environments, this cable delivers 40 Gbps bandwidth with low latency and simplified installation by eliminating the need for separate optical transceivers.

Advantages

This 40G QSFP DAC cable offers a cost-effective and power-efficient connectivity option for short-distance links. The passive copper construction reduces energy consumption compared with active or optical solutions and lowers overall system cost by removing transceiver modules. With plug-and-play QSFP terminations, the cable enables quick deployment and minimal setup time while maintaining low latency suitable for aggregation and switching layers.

Suitable for

• Rack-to-rack connections within a single data hall
• Within-rack uplinks between top-of-rack switches and aggregation switches
• High-throughput, short-reach links in enterprise and cloud data centers
• Switch-to-switch connections where 40 Gbps links are required

Key specifications

• Connector type: QSFP to QSFP
• Data rate: 40 Gbps
• Cable type: Passive direct-attach copper
• Recommended link length: short-range / within-rack and rack-to-rack
• Application: Data center switching and aggregation

How to use

Install the DAC cable by inserting each QSFP connector into the corresponding QSFP port on the network devices until the latch engages. Ensure both devices are powered down or follow hot-plug guidance from the device manufacturer if supported. After connection, verify link status through device management interfaces and configure ports for 40 Gbps operation according to your network policy and switch settings.

Recommendations

Use this passive 40G QSFP DAC cable for short-distance connections inside racks or between adjacent racks. Avoid routing the cable near sources of electromagnetic interference and do not exceed the recommended link length to maintain signal integrity. Check switch compatibility with passive QSFP DACs and confirm port settings for optimal performance.