23¾ Rotate Button - Switch your screen display between portrait andlandscape orientations.¾ Wireless Switch - Turn the radio on and off.CF Cards and Expansion SocketsThe computer features one CF expansion socket designed to interfacewith a Type I or Type II CF card.Inserting a CF CardThe computer will emit a tone followed by a higher tone when a CFcard is inserted. When you eject a card, the computer will emit a hightone followed by a lower tone. Cards can be inserted and removedwhether your system is on or off. Follow these instructions to insert aCF card:¾ Hold the CF card with the arrow side up and the connector sidetoward the socket.¾ Align the card connectors with the socket and carefully slide it intothe socket until it locks into place.The Battery Power SystemBefore using the computer on battery power for the first time,disconnect the power adapter and check the battery status icon on theWindows Toolbar to make sure the battery is fully charged.Removing the Battery PackTo remove the battery pack from its compartment, please refer toChapter 3,” Inserting and Removing the Battery Pack”.