Battery shows the charge level of the Linea Pro. Device Variables shows a pop-up message with technical information on the Linea pro, like device model, firmware version and more. This mey may be requested by our support team. The Charge iPod switch enables the user to decide wether whether or not the iPod should be charged when in the Linea Pro. The Mute Sound switch toggles the Linea Pro sounds on or off. PC-Sync switch allows the user to toggle syncing to iTunes on or off when the iPod is in a Linea Pro and the Linea Pro is connected to a PC using an USB-Cable. Last but not least, when connected to the internet through WiFi, the Check Firmware option checks the IPC website for new Linea Pro firmware and gives the user the option to download and install the new Linea Pro Firmware. | 