LED Functions Power Off Power is off On Power is on Blinking System is suspended Battery Off Battery power is OK On Battery receiving a charge Blinking Battery power is low Hard Drive Indicates hard-disk drive access NumLock Indicates status of the embedded keypad. See Embedded Keypad below. CapsLock Indicates status of CapsLock key Scroll Lock Indicates status of Scroll Lock key Turbo Off Power management features are active, as defined in Setup. On Power management features are disabled. Use + to enable Turbo Mode. System is always in Turbo Mode when the AC Adapter is plugged in. Embedded Keypad Default - NumLock LED Off Press key - NumLock LED On Press keys - NumLock LED Blinks (mostly off) Press , then keys - NumLock LED Blinks (mostly on) NumLock LED and the Keypad LED Status Keystroke +Keystroke Off Characters Cursor Control On Characters Numeric Mostly Off Cursor Control Characters Mostly On Numeric Characters