When the Numeric Lock LED is illuminated, the numeric keypad on the keyboard is enabled. When theLED is not illuminated, the cursor control on the numeric keypad is enabled. Press the Numeric Lock(NumLk or NmLk) key to switch back and forth between these modes.• Caps Lock LED:When the Caps Lock LED is illuminated, the Caps Lock mode is enabled. In this mode, you can type allalphabetic characters (A-Z) in upper case without pressing the Shift key. When the LED is not illuminated,the Caps Lock mode is disabled. To enable or disable the Caps Lock mode, press the Caps Lock (CapsLock or CapsLk) key.• Scroll Lock LED:When the Scroll Lock LED is illuminated, the Scroll Lock mode is enabled. The arrow keys can be usedas screen-scroll function keys and the cursor cannot be moved with the arrow keys. Not all applicationprograms support this function. When the Scroll Lock LED is not illuminated, the arrow keys can be usedfor cursor movement, not as screen-scroll function keys. Press the Scroll Lock (ScrLk) key to switchback and forth between these modes.2 The ThinkVantage buttonFor the Microsoft® Windows® XP or Microsoft Windows Vista® operating system, whenever you havea question about your computer or want to view Lenovo Web sites, press the ThinkVantage® button toopen the ThinkVantage Productivity Center or the Lenovo CareSM program for comprehensive help andinformation for your computer.Note: The ThinkVantage Productivity Center or the Lenovo Care program comes with your computer. Ifyou do not have either of them installed on your computer, pressing the ThinkVantage button will open theWindows System Information window.For the Microsoft Windows 7 operating system, press the ThinkVantage button to open the LenovoSimpleTap or Lenovo ThinkVantage Toolbox program.The SimpleTap program provides a quick way to customize the basic settings and personalized features ofthe computer. The Lenovo ThinkVantage Toolbox program is an one-stop diagnostic solution. It can quicklyidentify and resolve system performance and security problems.For the Microsoft Windows 8 operating system, press the ThinkVantage button to open the Lenovo DeviceExperience program.3 Fingerprint reader2 Lenovo Preferred Pro USB Fingerprint Keyboard User Guide