Cisco PWR-850-870-WW1 enterprise networking (router/Catalyst switch/UCS families) Power Supply

The Cisco PWR-850-870-WW1 is an external AC power supply for the Cisco 850 and 870 series integrated services routers, small-office and branch routers that combined routing, switching and security functions in a single desktop unit. As an external adapter rather than an internal module, it is a routine like-for-like replacement when the original supply fails or is missing, and 850/870-series routers still see continued use in small branch and teleworker deployments where a compact, low-cost router remains adequate. Tech-Star (UK-based, shipped worldwide) supplies Cisco power supplies to keep these small-branch routers in service. Confirm the exact router model and regional plug/voltage variant before ordering, since Cisco issued several worldwide (WW) variants of this external supply across the 850/870 range.