Belkin Adapters

Hi,
I am running XP Home & XP Media Centre on a Belkin N1 Wireless Modem Router
With N1 Wireless USB Network Adapters.
The wireless connections are running smoothly, but there are just a couple
of things
I am not sure of:
When the XP Home computer is switched off, the blue light on the adapter is
still on.
However, when the XP Media Centre computer is switched off, so the blue
light on the adapter goes off also.
Also when in use the adapter on XP Media computer blinks, whereas on the XP
Home computer it doesn’t seem to do this.
As I stated both are working ok, but I wondered why there is a difference in
the actions of the adapters.
Thank you.

Sue