A BMWs drive belt powers the accessories like the alternator, water pump(except some newer models), power steering pump, A/C compressor and the fan. It would make sense then, that reducing the amount of power these accessories draw from the engines output, the more power you have at the wheels.
Windows Portable Devices. Windows Portable Devices (WPD) is a driver technology that supports a wide range of portable devices such as mobile phones, digital cameras, and portable media players.
WPS (Wi-Fi Protected Setup) is a feature allowing devices to more easily connect to Wi-Fi access points without typing in a password which may be quite long. A common way that WPS is implemented involves displaying a secret PIN code on the Wi-Fi access point, and requiring that the same PIN be typed into the device.