Keep critical switching infrastructure supplied with the power capacity the Aruba 6400 platform expects. This HPE 1,800 W PS/C16 accessory is intended for Aruba 6400 environments where sustained availability, serviceability, and platform fit matter more than generic compatibility. For infrastructure teams, the value is in matching the right power accessory to the chassis instead of forcing a lower-spec substitute into a production stack. That helps preserve deployment consistency, simplifies spares planning, and reduces the risk of mismatched components during maintenance windows. In dense campus, aggregation, or core switching roles, power headroom is not a luxury; it is part of keeping the network stable under load. Because this is a platform-specific accessory, it is best suited for organizations standardizing on Aruba 6400 hardware and looking to maintain the same operational profile across refreshes and replacements. When uptime, fit, and procurement clarity matter, the right accessory is the one that aligns with the switch family you already run.