Re: Safely Remove Hardware? Does it turn off Power?

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that is true for a device that is not externally powered. selective suspend
is something else entirely. selective suspend is when devices are turned
off after they have idled out (in very simple terms).

d

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"Jim Applebury" <JimApplebury@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:BD429E60-9CEF-41E7-A1DD-9356F0B5EDB8@xxxxxxxxxxxxxxxx
Thanks Doron,
So I can report that when the light goes out on my USB flash drive that
the
power is off and only after a reinsertion does the power return?
Is this refered to by "Selective Suspension of USB"?
Thanks Again,
Jim

"Doron Holan [MS]" wrote:

it depends on the bus. the underlying bus driver will turn the device
off.
it will be powered on when the device is restarted or if the device is
removed and reinserted.

d

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"Jim Applebury" <Jim Applebury@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
message
news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@xxxxxxxxxxxxxxxx
I've been trying to research for our Computer Club whether or not the
"Safely
Remove Hardware" applet actually turns off the power to the device and
if
does, does it wait for the device to be physically removed before
returning
power to the port?

I've noted the light on my USB flash drive goes out after sending the
remove
command which seems to support this. I've also seen reference to the
D3
power state when this command is sent but I've seen different D3 states
referenced on hot-pluggable devices.

I sure will appreciate any and all input.
Thanks,
Jim





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