HP, X312 Power supply hot-plug / redundant ( plug-in module ) AC 100-240 V 1000 Watt for HP, 3800-24G-PoE+-2XG Switch, 3800-48G-PoE+-4XG Switch - HP, X312 Power supply hot-plug / redundant ( plug-in module ) AC 100-240 V 1000 Watt for HP, 3800-24G-PoE+-2XG Switch, 3800-48G-PoE+-4XG Switch. HP, X312 1000W 100-240VAC to 54VDC Power Supply 110 V AC, 220 V AC Input Voltage Internal - X312 1000W 100-240VAC TO 54VDC PS - Item-Type: - Proprietary Power Supply. Item-Part-No#: J9580A