Asus X75A - Manual (Page 46)

46 Notebook PC User Manual
Drive Activity Indicator
Indicates that the Notebook PC is accessing one or more storage
device(s) such as the hard disk. The light flashes proportional to
the access time.
Bluetooth / Wireless Indicator
This is only applicable on models with internal Bluetooth (BT)
and built-in wireless LAN. This indicator will light to show that
the Notebook PC’s built-in Bluetooth (BT) function is activated.
When the built-in wireless LAN is enabled, this indicator will also
light. (Windows software settings are necessary.)
Number Lock Indicator
Indicates that number lock [Num Lk] is activated when lighted.
Number lock allows some of the keyboard letters to act as numbers
for easier numeric data input.
Capital Lock Indicator
Indicates that capital lock [Caps Lock] is activated when lighted.
Capital lock allows some of the keyboard letters to type using
capitalized letters (e.g. A, B, C). When the capital lock light is OFF,
the typed letters will be in the lower case form (e.g. a,b,c).