The HP 922457-001 is a 180 W power supply unit listed for the HP ProDesk 400 G4 MT. It provides the power supply component specified for this desktop chassis, making it a relevant replacement part when servicing that system.
The listing identifies the part specifically as 922457-001 and associates it with the 400 G4 MT configuration. Its stated 180 W rating and desktop system designation distinguish it from other power supply units in the same product family.