The HP 849913-001 power button board is a replacement control part listed for the HP EliteBook 850 G3. It provides the laptop’s power button interface as a dedicated board.
The listing specifies that this board is supplied with its cable, so the cable is part of the described item. Its exact part number helps identify the board for service or repair work involving the matching laptop model.
This is a model-specific laptop part rather than a standalone power supply or charger.