PCBA, POWER BOARD

HP 905579-001 power button board is a replacement part for the power-button assembly in the HP Stream Laptop PC 14. HP’s service guide identifies this exact spare part number as the power button board.

The board is listed separately from its cable, 905562-001. Its role is tied to the computer’s power button: a brief press can turn the computer on, initiate Sleep, or wake it from Sleep or Hibernation, depending on the computer’s state.

HP’s service procedure describes disconnecting the board cable and removing the retaining screw to take the board out. The guide treats this as a repair component within the laptop, rather than as a power adapter or DC input connector.