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Cisco 650W AC Config 4 power supply unit, front-to-back cooling, new condition

Cisco Systems, Inc.

Cisco Systems, Inc. 650W AC Config 4 Power Supply

SKU CH-NDKR-334M7

A 650 W AC power supply with front-to-back cooling for Cisco networking equipment

  • 650 W output delivers ample headroom for network chassis
  • Front-to-back airflow matches rack cooling design
  • AC input simplifies integration with standard power feeds
  • Config 4 form factor fits designated Cisco slots
  • First listed by manufacturer in June 2024

Cisco 650W AC Config 4 Power Supply

The Cisco 650W AC Config 4 Power Supply is a new 650 watt AC input unit designed for compatible Cisco networking equipment. It delivers front-to-back airflow cooling to match standard rack ventilation paths. This module suits network administrators upgrading or maintaining supported Cisco chassis.

Capacity and Headroom

The 650W rating provides ample headroom for typical line-card configurations within supported Cisco platforms. It handles normal switching and routing loads with reserve for peak traffic bursts. The unit runs out of capacity only when total chassis draw exceeds 650 watts, which is unlikely in standard deployments.

Front-to-Back Cooling Constraint

Front-to-back cooling requires the chassis to pull cool air from the cold aisle and exhaust it to the hot aisle. Installing this supply in a chassis with reversed or side-to-side airflow would cause thermal issues. The design also prevents use in enclosures that lack the matching airflow direction.

Highlights

  • 650 W output delivers ample headroom for network chassis
  • Front-to-back airflow matches rack cooling design
  • AC input simplifies integration with standard power feeds
  • Config 4 form factor fits designated Cisco slots
  • First listed by manufacturer in June 2024

Specifications

BrandCisco

Questions about this item

Will this 650W unit fit in the same chassis slot as my existing Cisco power supply?

The supply uses Cisco's standard form factor so it occupies the same bay as other Cisco AC modules of comparable output.

How can I confirm the 650W supply is operating correctly once installed?

The front-panel LEDs show input and output status; a steady green light on both indicates normal operation.

What ships with the power supply and what must I source separately?

The unit itself is supplied; a compatible IEC mains lead for your region is not included.

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