Samsung N860 User Manual page 19

Num Lock light: Light is on when the embedded numeric keypad is
activated. See "Using the Numeric Keypad" on page 13 for a
description of the keypad.
Caps Lock light: Light is on when the caps lock function is activated.
When the function is activated, all alphabetic characters you type will
be in upper case.
Scroll Lock light: Light is on when the scroll lock function is activated.
The scroll lock function affects cursor movement and text scrolling in
some applications. This is a software specific function. Refer to the
appropriate software manuals for a description of the <Scroll> key.
Drive light: Light is on when the hard drive or floppy drive is being
accessed. Do not turn your computer off when this light is on. When
the light is amber, the floppy drive is being accessed. When the light
is green, the hard drive is being accessed. For a CD-ROM or DVD-
ROM drive, check the light on the drive itself to see if the drive is
being accessed.
Reading the System Status Lights 19