– The Toshiba Satellite L50-B L55-B S55-B Power Button Board with Cable is a replacement part for laptops that have a damaged or malfunctioning power button. – The power button board is responsible for turning the laptop on and off, as well as controlling the sleep and hibernation modes. – This part is made of high-quality materials and is designed to last for a long time. – It features a durable construction and is easy to install. – The board also includes a cable that connects it to the motherboard. – In addition to the power button, the board also includes a number of other features, such as a volume control button, a microphone mute button, and a headphone jack.