Cisco PWR-C1-BLANK enterprise networking (router/Catalyst switch/UCS families) Power Supply

The Cisco PWR-C1-BLANK is a power supply bay blank panel for Catalyst switches built in the “Config 1” single-power-supply chassis layout, fitting the empty bay on units that do not have a second, redundant PSU fitted. Closing the bay with the correct blank maintains the chassis’s rated airflow and keeps the open slot’s internal power connector protected from dust and stray contact. It is a purely mechanical part with no active electronics, fitted at initial build or when a second PSU is removed and not replaced. Confirm your switch model uses the Config 1 PSU bay rather than the differently-sized Config 2 layout before ordering, since the two are not interchangeable. Tech-Star (UK-based, shipped worldwide) supplies Cisco Catalyst spares to keep switch chassis correctly configured.