Cisco Systems PWR-C49-300AC Power Supply Module

The Cisco PWR-C49-300AC Power Supply Module delivers 300 watts of AC power to Cisco Catalyst 4948 switches, enabling reliable operation in high-performance Layer 3 networks. It is designed for the WS-C4948-S, WS-C4948-E, and WS-C4948-10GE models and supports dual power configurations for enhanced redundancy, with an internal hot-swappable design mounted in the chassis and an integrated cooling fan to maintain steady temperatures. The module accepts 100–240 VAC at 50–60 Hz and lists a Manufacturer Part Number of PWR-C49-300AC (alternately PWRC49300AC); common replacements include PWR-C49-300AC-R, PWR-C49-300DC, and PWR-C49-600AC-R. As part of the Catalyst 4948 Series, it is commonly deployed in enterprise campus networks, data center switching environments, and distribution infrastructure where dependable power delivery sustains uninterrupted switching performance. Network administrators replace defective units or maintain redundant power configurations to support continuous operation of Cisco Catalyst equipment.