Keep critical network infrastructure running with a 550 W AC spare power supply built for the Aruba 9240 platform. This replacement unit is intended for organizations that need fast recovery from power-supply failure and predictable maintenance windows without disrupting the switching layer. For enterprise teams, the value is in preserving service continuity. A spare PSU lets you restore capacity quickly, reduce downtime risk, and avoid the cost and delay of replacing an entire system when only the power module has failed. That matters in distribution closets, campus cores, and other environments where switch availability directly affects users, applications, and connected devices. This model is a practical fit for operations that standardize on Aruba infrastructure and keep critical spares on hand. It supports a disciplined lifecycle strategy: replace only the failed component, return the system to service, and keep the network stable while procurement and maintenance stay aligned. For teams managing uptime targets, that efficiency is worth more than a lower-cost generic substitute.