DAC cable CBO Arista CAB-Q-S-5M 5 m passive copper direct attach

Passive copper DAC (Direct Attach Cable) CBO Arista CAB-Q-S-5M is a 5 meter direct-attach cable designed for short-range, high-density network connections. Intended for use between switches, routers or other network devices with compatible QSFP+/SFP+ interfaces, this 5 m passive direct attach cable delivers a physical link without separate transceivers. The cable provides a cost-effective, low-latency option for top-of-rack and neighboring-rack connections in data centers and wiring closets where short, reliable copper links are required.

Advantages

The passive copper construction reduces power consumption and eliminates the need for separate optical transceivers, lowering operational cost and equipment complexity. With a fixed 5 m length and direct-attach design, the cable simplifies installation and cable management in dense network deployments. The solution offers low latency and predictable electrical performance suitable for high-throughput local connections.

Suitable for

• Short-distance connections between switches and routers in data centers
• Top-of-rack and adjacent-rack networking links
• High-density switch-to-server or switch-to-switch cabling where QSFP+/SFP+ compatible ports are available
• Environments prioritizing low latency and reduced power use

Key specifications

• Cable type: passive copper direct attach cable
• Connector compatibility: QSFP+/SFP+ compatible form factor
• Length: 5 meters
• Typical use: short-reach interconnects for racks and switches
• Latency profile: low electrical latency suitable for local links
• Installation: fixed-length, plug-and-play connection without separate transceivers

How to use

Ensure both network devices have compatible QSFP+/SFP+ interfaces before connecting. Power down equipment only if the vendor recommends it; otherwise insert each connector directly into the corresponding port until it seats securely. Use appropriate rack routing and strain relief to avoid sharp bends or tension along the cable. Verify link status on connected devices and configure network settings as required for the new physical link.

Usage recommendations

Use this passive 5 m DAC for short, permanent interconnects inside racks or between adjacent racks. Avoid exceeding the manufacturer’s recommended bend radius and protect connectors from dust when not in use. For longer distances or where optical isolation is needed, consider an optical transceiver and fiber cable alternative.