Cisco PWR-2911-AC enterprise networking (router/Catalyst switch/UCS families) Power Supply

The Cisco PWR-2911-AC is an AC power supply built for the Cisco 2911 Integrated Services Router (ISR G2), a modular branch router combining routing, security and voice capability in a single chassis. It is the standard-capacity supply for the platform, sized for the router itself rather than the higher-output PoE variant used where the 2911 needs to power onboard switch ports or modules directly. The 2911 sits in the middle of the 2900 Series by port and slot density, between the smaller 2901 and larger 2921/2951 models, and this supply is specific to that chassis rather than interchangeable across the wider 2900 family. ISR G2 routers of this generation remain widely deployed at branch and small-office sites, and since the router will not run at all without a working supply, a spare is a sensible item to hold for anyone maintaining a fleet of them. Tech-Star (UK-based, shipped worldwide) stocks Cisco components to support ongoing network maintenance.