HP J4147A Hewlett-Packard HP ProCurve networking / enterprise server hardware Power Supply

The HP J4147A is a ProCurve 9300 Redundant Power Supply, a hot-swappable power module for the Switch 9300 series chassis (9308M and 9315M) that provides N+1 redundancy when fitted alongside the chassis’s primary supply, so the switch keeps running if one power module fails. Switch 9300 chassis are HP’s higher-capacity enterprise chassis switches from this ProCurve generation, and adequate power redundancy is important given the number of line cards a fully populated chassis can carry. This unit is the correct spare for restoring redundancy after a power module failure or for adding redundant power to a chassis currently running on a single supply. Specifiers should confirm their exact chassis configuration and total power draw across installed modules before ordering. Tech-Star (UK-based, shipped worldwide) sources and tests refurbished HP parts like this one to keep Switch 9300 deployments running past end of manufacturer support.