AC Power On with desktop mac to sleep

If not, does anyone know if the power to the USB ports or Firewire changes states when the computer goes to sleep?
Sam Wuebben wrote on :

I want to be able to turn something on whenever my PowerMac G4 goes to sleep. Anybody know of something I could get to do this.

If not, does anyone know if the power to the USB ports or Firewire changes states when the computer goes to sleep? (And changes back whe it wakes up) If something changes I could make a circuit to detect that change and turn on an AC outlet.

Thanks

Sander Tekelenburg replied on :

In article 34caf251.0401161451.3931a258@redacted.invalid, illuminations@redacted.invalid (Sam Wuebben) wrote:

[...] does anyone know if the power to the USB ports or Firewire changes states when the computer goes to sleep? (And changes back whe it wakes up) [...]

I have a FireWire CD burner that goes to sleep when the Mac goes to sleep and wakes up with it. So it would seem that some signal is sent (or being stopped sending).