HPE P21652-B21 is a 350 W Gold FIO power supply kit for the HPE ProLiant ML30 Gen10 server, providing AC power for this specific platform.
Its 350 W rated output and Gold-level efficiency, listed by HPE as 92%, describe its power capacity and efficiency. It supports input ranges of 100–120 VAC and 200–240 VAC.
This is a non-hot-plug, non-redundant option for ML30 Gen10 configurations, so it is intended for systems using that server platform.