CAB-SPWR-30CM Cisco 30CM StackPower Cable

Cisco CAB-SPWR-30CM - StackPower Cable (30 cm)

The CAB-SPWR-30CM is part of Cisco’s StackPower system, which allows multiple Catalyst switches to share their power supplies as a single common power pool. This provides redundancy, load balancing, and efficiency across the stack. The 30 cm length is designed for adjacent switches in the same rack, minimizing cable slack.

🔧 Key Specifications

• Cable Type: Cisco StackPower interconnect cable
• Length: 30 cm (~1 foot)
• Compatibility:
  • Cisco Catalyst 3750-X Series
  • Cisco Catalyst 3850 Series
  • Cisco Catalyst 9300 Series (with StackPower support)
• Functionality:
  • Aggregates power supplies across the stack
  • Provides redundancy (if one PSU fails, others cover the load)
  • Enables efficient power sharing (unused capacity in one switch can power another)
• Installation:
  • Hot-pluggable, connects to StackPower ports on the rear of the switch
  • Used in ring or star StackPower topologies

🧩 Ideal Use Cases

• Directly stacked switches in the same rack unit (shortest cable avoids clutter)
• Redundancy: Ensures uninterrupted operation if a power supply fails
• Efficiency: Allows smaller PSUs per switch while still meeting total stack demand
• Scalability: Simplifies power planning in multi-switch deployments