CAB-SPWR-30CM= is a StackPower cable designed for Cisco Catalyst switches. This cable facilitates power distribution and redundancy among switches located within a stack. The "=" symbol at the end of the model code indicates that this product is sold separately as an original Cisco spare part. Key Technical Specifications: Parameter – Detail; Model – CAB-SPWR-30CM=; Manufacturer – Cisco Systems; Cable Length – 30 cm (0.3 meters / 1 foot); Cable Type – StackPower Cable; Connector Type – Cisco XPS (eXpanded Power System) / StackPower connectors; Purpose – Connecting adjacent switches stacked within a server rack. Key Functions and Benefits: Power Sharing – If a power supply in one switch fails or reaches full load, the cable allows the system to draw power from other switches in the stack. Short Distance – The 30 cm length is ideal for devices positioned one above the other (at a 1U interval) within a rack. Excess cable length does not hang loose, maintaining a tidy cable arrangement within the rack. Full Redundancy: Prevents network devices from shutting down due to power outages. Compatibility: This cable is compatible with Catalyst series devices that support Cisco StackPower technology: Cisco Catalyst 3750-X Series (e.g., 3750X-24P, 3750X-48T, etc.), Cisco Catalyst 3850 Series, and Cisco XPS 2200 (eXpanded Power System).