Normal for CPU and memory LEDs to blink when coming out of sleep mode?

This is the first case I've had that I can see into, so it may have happened with all of my previous computers and I just never noticed. Anyway, when I come out of sleep mode the CPU and memory LEDs blink back and forth for a second before everything starts up. Is this normal, like a mini POST or something?

Just want to make sure. Thanks.
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More about normal memory leds blink coming sleep mode
  1. I have never heard of memory or CPU LEDs.
    Perhaps you could indulge us on your system spec and case etc?
  2. Yes, it is.

    Not for that reason, but it's the short explanation.

    Yes it is.

    The lights simply show activity.
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