CBO QSFP28 direct attach copper (DAC) cable QSFP28-DAC-1M-PS-BL 1 m 100 Gbit/s

CBO QSFP28 direct attach copper (DAC) cable QSFP28-DAC-1M-PS-BL 1 m 100 Gbit/s is a 1-metre passive copper interconnect designed for short-reach 100 Gbit/s links. The cable terminates in QSFP28 form-factor plugs and is compatible with devices that accept QSFP28 passive DACs, providing a low-latency, low-power connection for high-density switch, router and server environments. Its compact construction is intended for top-of-rack and rack-to-rack connections in data centre and enterprise networks where cost and power efficiency are priorities.

Advantages

This QSFP28 DAC cable offers immediate plug-and-play installation without the need for additional transceivers or optical components, reducing total cost of ownership for short-distance 100 Gbit/s links. As a passive copper assembly it consumes no extra power compared with active optical modules and delivers minimal latency, making it suitable for latency-sensitive applications. The single-cable length simplifies cable management in dense rack environments and maintains signal integrity within its intended reach.

Suitable for

• Top-of-rack connections between switches and servers
• Rack-to-rack interconnects within the same equipment room
• High-density 100 Gbit/s ports in data centres
• Short-reach links where cost and power savings are required

Key specifications

• Form factor: QSFP28 to QSFP28
• Length: 1 metre
• Data rate: up to 100 Gbit/s
• Cable type: passive direct attach copper (DAC)
• Typical applications: short-reach interconnects, top-of-rack and rack-to-rack
• Latency: low, passive copper link

How to use

Install the cable by inserting each QSFP28 connector into the corresponding QSFP28 port on your network devices until the latch engages. Ensure both ends are compatible with passive QSFP28 DAC connections and that ports are configured for 100 Gbit/s operation if required by the equipment. Route the cable to avoid tight bends and mechanical strain; maintain recommended bend radius and secure the cable to prevent movement that could stress connectors. No additional configuration is generally required beyond standard port settings.

Recommendations

Use this 1 m passive QSFP28 DAC for short, fixed-distance links inside racks or between adjacent racks. Verify vendor compatibility with passive DACs for the specific switch or server model and avoid exceeding the cable's intended reach. Store and handle the cable by the connector housings to protect contacts and maintain performance.