SPS-POWER BUTTON BD 14

HP 850354-001 power button board is a replacement board for the power-button function in a compatible notebook. It is listed as an SPS power button board for a 14-inch system, giving the part a clear identity for service and replacement work.

The listing names the HP EliteBook 840 G3 and HP ProBook 650 G2 among the notebook PCs where this part is used. The board’s role is straightforward: it provides the power-button function. It is a specific part-numbered component, rather than a complete notebook or a general-purpose button accessory.