An activity light or access light is an LED on a computer or drive that illuminates when on or working. For example, as a program opens the hard drive activity light blinks on and off to indicate that the computer and hard drive are working.

CD terms, Color terms, Floppy drive terms, Hard drive terms, LED, Light

  • Is it normal for the computer power light to blink?
  • Why does my CD-ROM drive light blink every few seconds?
  • Why is the floppy drive light not turning off?
  • CD-ROM help and support.
  • Floppy drive help and support.
  • Hard drive help and support.