DAC cable CBO QSFP-DAC-2M 2 m length, QSFP+ direct attach copper

The BlueOptics CBO QSFP-DAC-2M is a 2-meter QSFP+ Direct Attach Copper (DAC) cable designed for short-range, high-bandwidth interconnects in data center environments. It provides a fixed copper link with QSFP+ connectivity for direct connections between switches, servers or network appliances. The cable targets top-of-rack and aggregation wiring where low latency, predictable electrical performance and cost-efficiency are required.

Advantages

This QSFP+ DAC cable offers low latency and stable signal integrity for high-speed 40GbE or compatible QSFP+ interfaces. Being a direct-attach copper solution, it eliminates the need for transceivers and associated power overhead, lowering both capital and operational expenses for short-reach links. The 2 m length balances reach and manageability for rack-to-rack or within-rack connections while maintaining a compact, robust construction suited to dense cabling environments.

Suitable for

• Top-of-rack (ToR) connections in data centers
• Short-range aggregation links between switches
• Direct server-to-switch high-speed connections
• High-density network deployments requiring QSFP+ ports

Key specifications

• Cable type: Direct Attach Copper (DAC)
• Connector type: QSFP+ to QSFP+
• Length: 2 meters
• Supported interface: QSFP+ (40 Gbps-class links or compatible)
• Transmission medium: Copper twinax cabling
• Typical use: Short-range, high-speed point-to-point connections

How to use

Ensure both devices have compatible QSFP+ ports and that interfaces are powered down or follow hot-plug guidelines from the equipment vendor. Align and insert each QSFP+ plug into the corresponding port until it seats securely; use the built-in latch or release mechanism to engage and disengage the connectors. Verify link status and interface configuration in the connected devices' management interface. For best performance, avoid sharp bends and maintain adequate airflow around patching areas.

Recommendations

Use this DAC cable for short-range connections within racks or between adjacent racks. Avoid stretching beyond the specified length and keep bend radius above manufacturer-recommended limits. For longer distances or fiber-based segregation, consider active optical solutions.