Statement of Limited Warranty

Warranty period ThinkPad X21 Series System Hardware: 3 years System Battery: 1 year

System status indicators

Index number LED indicator LED indicator color LED indicator meaning 1 Battery Green The battery is fully charged. Blinking green The battery has enough power to operate, but is charging. Orange The battery power is low. The battery is charging. Blinking orange The battery needs charging. 2 Standby status Green The computer is in standby mode. Blinking green The computer is entering standby mode or hibernation mode, or is resuming normal operation. 3 Drive in use Green Data is being read from or written to the hard disk drive, diskette drive, or drive in the Ultrabay 2000. 4 Num lock Green The numeric keypad on the keyboard is enabled. 5 Caps lock Green Caps lock mode is enabled. 6 Scroll lock Green The arrow keys can be used as screen scroll function keys. 7 Power on Green The power is on.

Function keys

Item Description Key Combination Result Fn + F1 Reserved. Fn + F2 Reserved. Fn + F3 Standby mode. Fn + F4 Suspend mode. Fn + F5 Reserved. Fn + F6 Reserved. Fn + F7 Switch between the LCD, the external monitor, and both the LCD and external monitor. Fn + F8 Reserved. Fn + F9 Reserved. Fn + F10 Reserved. Fn + F11 Reserved. Fn + F12 Hibernation mode. Fn + PgUp ThinkLight On/Off. Fn + Home The LCD becomes brighter. Fn + End The LCD becomes less bright.

Front view

Index Description 1 System status indicators 2 Power switch 3 Battery and standby mode status indicators 4 USB port 5 Hard disk drive 6 Ultraport connector 7 ThinkLight 8 Volume buttons 9 ThinkPad button 10 TrackPoint pointing stick 11 TrackPoint buttons

Bottom view

Index Description 1 Battery pack 2 Battery pack latches 3 Docking connector 4 Memory cover 5 LCD latches