Direct Attach Copper (DAC) Cable CBO 470-ABYH 100G 2m for Dell Networking

The Direct Attach Copper (DAC) Cable CBO 470-ABYH 100G 2m for Dell Networking is a 2-metre passive copper interconnect designed for short-reach, high-bandwidth links inside data centres and server racks. This 100G assembly provides a direct electrical connection between compatible switch and server ports, offering low latency and reliable throughput without the need for separate optical transceivers. The cable is intended for use with Dell Networking equipment and similar platforms that accept DAC connections for top-of-rack and aggregation links.

Advantages

This 100G DAC cable delivers a compact and low-power solution for short-distance connections, reducing the number of active modules and simplifying rack cabling. Its fixed 2 m length balances reach and manageability for typical rack layouts. The passive copper design ensures predictable latency and stable signal integrity for high-throughput applications while avoiding the additional cost and power draw of optical transceivers and SFP cages.

Suitable for

• Top-of-rack connections between Dell Networking switches and servers
• High-bandwidth aggregation links inside server racks
• Short-reach links in data centre patching and spine/leaf architectures
• Low-latency interconnects for storage and compute clusters

Key specifications

• Data rate: 100 Gbit/s
• Length: 2 metres
• Cable type: Direct Attach Copper (passive DAC)
• Connector style: QSFP28 electrical interface (compatibility with Dell Networking ports supporting DAC)
• Use environment: short-reach, in-rack or adjacent-rack connections

How to use

Install the DAC cable by inserting each connector into the corresponding 100G port on the switch and the server until it seats firmly. No additional transceivers or configuration is required beyond ensuring the connected ports are enabled and set to the correct speed on the networking devices. Route the cable to avoid sharp bends and excessive strain; maintain manufacturer-recommended minimum bend radius. Verify link status through the network equipment management interface and monitor for proper speed and error counters after installation.

Recommendations

Use this 2 m DAC cable for in-rack and adjacent-rack 100G links where short reach, low latency and low power consumption are priorities. Avoid deploying passive copper DACs for distances or topologies that exceed their electrical reach; for longer or optical-isolation-required links, consider fibre-based transceivers and cables.