Epson 4SLC2-50 - Manual (Page 23)

LEDs
The LEDs (light emitting diodes) on your computer provide
information about its operation,
Power—Indicates the computer is on; either the AC
adapter, battery pack, or automobile adapter is supplying
power to the computer.
Low battery—When flashing, indicates the battery
capacity is less than 20%.
Charging—Indicates the battery is fully charged; blinks
when the AC adapter is connected and charging the
battery.
Suspend mode—Indicates the computer is in Suspend
mode.
Hard disk drive-Indicates the computer is accessing the
hard disk drive.
Num Lock—Indicates that Num Lock is set on the
keyboard. This activates the embedded numeric keypad
on the keyboard.
Caps Lock—Indicates that Caps Lock is set on the
keyboard.
Scroll Lock—Indicates that Scroll Lock is set on the
keyboard.
1-4 Setting Up the Computer