The HP ProBook 14" 640 G4 Genuine Laptop Power Button Board with Cable 6050a2936701 is a replacement part specifically designed for the HP ProBook 14" 640 G4 laptop. It features a genuine power button board with a cable included, ensuring compatibility and reliable performance. This product is ideal for those looking to replace a damaged or malfunctioning power button board on their HP ProBook laptop, providing a convenient and efficient solution for maintaining the functionality of their device.