Safely Remove Hardware? Does it turn off Power?

Posted: 04-05-2006, 12:36 AM

Jim Applebury

Guest
Posts: n/a

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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Responses to "Safely Remove Hardware? Does it turn off Power?"

Doron Holan [MS]

Guest
Posts: n/a

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

Posted: 04-05-2006, 01:55 AM

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

--
Please do not send e-mail directly to this alias. this alias is for
newsgroup purposes only.
This posting is provided "AS IS" with no warranties, and confers no rights.

"Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in message
news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...

> 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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Jim Applebury

Guest
Posts: n/a

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

Posted: 04-05-2006, 03:58 AM

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
>
> --
> Please do not send e-mail directly to this alias. this alias is for
> newsgroup purposes only.
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
> "Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in message
> news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...
> > 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
>
>
>

Reply With Quote

Doron Holan [MS]

Guest
Posts: n/a

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

Posted: 04-05-2006, 04:15 AM

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

--
Please do not send e-mail directly to this alias. this alias is for
newsgroup purposes only.
This posting is provided "AS IS" with no warranties, and confers no rights.

"Jim Applebury" <JimApplebury@discussions.microsoft.com> wrote in message
news:BD429E60-9CEF-41E7-A1DD-9356F0B5EDB8@microsoft.com...

> 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
>>
>> --
>> Please do not send e-mail directly to this alias. this alias is for
>> newsgroup purposes only.
>> This posting is provided "AS IS" with no warranties, and confers no
>> rights.
>>
>>
>> "Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in
>> message
>> news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...
>> > 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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Jim Applebury

Guest
Posts: n/a

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

Posted: 04-05-2006, 05:44 AM

Thanks Again... Had a hard time finding a definitive answer.
Take Care Jim

"Doron Holan [MS]" wrote:

> 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
>
> --
> Please do not send e-mail directly to this alias. this alias is for
> newsgroup purposes only.
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
>
> "Jim Applebury" <JimApplebury@discussions.microsoft.com> wrote in message
> news:BD429E60-9CEF-41E7-A1DD-9356F0B5EDB8@microsoft.com...
> > 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
> >>
> >> --
> >> Please do not send e-mail directly to this alias. this alias is for
> >> newsgroup purposes only.
> >> This posting is provided "AS IS" with no warranties, and confers no
> >> rights.
> >>
> >>
> >> "Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in
> >> message
> >> news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...
> >> > 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
> >>
> >>
> >>

>
>
>

Reply With Quote

.A.

Guest
Posts: n/a

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

Posted: 01-23-2008, 02:06 AM

This is interesting, I found that only Windows XP (it could've been the
hardware at the time) turned the light off. My copy of Vista doe not. I would
like to get Windows Vista to always switch the power (and thus light off)
when I undock the USB. How can I do this please.

..A.

"Jim Applebury" wrote:

> Thanks Again... Had a hard time finding a definitive answer.
> Take Care Jim
>
> "Doron Holan [MS]" wrote:
>
> > 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
> >
> > --
> > Please do not send e-mail directly to this alias. this alias is for
> > newsgroup purposes only.
> > This posting is provided "AS IS" with no warranties, and confers no rights.
> >
> >
> > "Jim Applebury" <JimApplebury@discussions.microsoft.com> wrote in message
> > news:BD429E60-9CEF-41E7-A1DD-9356F0B5EDB8@microsoft.com...
> > > 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
> > >>
> > >> --
> > >> Please do not send e-mail directly to this alias. this alias is for
> > >> newsgroup purposes only.
> > >> This posting is provided "AS IS" with no warranties, and confers no
> > >> rights.
> > >>
> > >>
> > >> "Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in
> > >> message
> > >> news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...
> > >> > 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
> > >>
> > >>
> > >>
> >
> >
> >

Reply With Quote

.A.

Guest
Posts: n/a

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

Posted: 01-23-2008, 02:08 AM

This is interesting, I found that only Windows XP (it could've been the
hardware at the time) turned the light off. My copy of Vista doe not. I would
like to get Windows Vista to always switch the power (and thus light off)
when I undock the USB. How can I do this please.

..A.

"Jim Applebury" wrote:

> Thanks Again... Had a hard time finding a definitive answer.
> Take Care Jim
>
> "Doron Holan [MS]" wrote:
>
> > 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
> >
> > --
> > Please do not send e-mail directly to this alias. this alias is for
> > newsgroup purposes only.
> > This posting is provided "AS IS" with no warranties, and confers no rights.
> >
> >
> > "Jim Applebury" <JimApplebury@discussions.microsoft.com> wrote in message
> > news:BD429E60-9CEF-41E7-A1DD-9356F0B5EDB8@microsoft.com...
> > > 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
> > >>
> > >> --
> > >> Please do not send e-mail directly to this alias. this alias is for
> > >> newsgroup purposes only.
> > >> This posting is provided "AS IS" with no warranties, and confers no
> > >> rights.
> > >>
> > >>
> > >> "Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in
> > >> message
> > >> news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...
> > >> > 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
> > >>
> > >>
> > >>
> >
> >
> >

Reply With Quote

quester

Guest
Posts: n/a

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

Posted: 01-23-2008, 02:08 AM

This is interesting, I found that only Windows XP (it could've been the
hardware at the time) turned the light off. My copy of Vista doe not. I would
like to get Windows Vista to always switch the power (and thus light off)
when I undock the USB. How can I do this please.

..A.

"Jim Applebury" wrote:

> Thanks Again... Had a hard time finding a definitive answer.
> Take Care Jim
>
> "Doron Holan [MS]" wrote:
>
> > 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
> >
> > --
> > Please do not send e-mail directly to this alias. this alias is for
> > newsgroup purposes only.
> > This posting is provided "AS IS" with no warranties, and confers no rights.
> >
> >
> > "Jim Applebury" <JimApplebury@discussions.microsoft.com> wrote in message
> > news:BD429E60-9CEF-41E7-A1DD-9356F0B5EDB8@microsoft.com...
> > > 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
> > >>
> > >> --
> > >> Please do not send e-mail directly to this alias. this alias is for
> > >> newsgroup purposes only.
> > >> This posting is provided "AS IS" with no warranties, and confers no
> > >> rights.
> > >>
> > >>
> > >> "Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in
> > >> message
> > >> news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...
> > >> > 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
> > >>
> > >>
> > >>
> >
> >
> >

Reply With Quote

glint

Guest
Posts: n/a

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

Posted: 01-23-2008, 02:11 AM

This is interesting, I found that only Windows XP (it could've been the
hardware at the time) turned the light off. My copy of Vista doe not. I would
like to get Windows Vista to always switch the power (and thus light off)
when I undock the USB. How can I do this please.

..A.

"Jim Applebury" wrote:

> Thanks Again... Had a hard time finding a definitive answer.
> Take Care Jim
>
> "Doron Holan [MS]" wrote:
>
> > 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
> >
> > --
> > Please do not send e-mail directly to this alias. this alias is for
> > newsgroup purposes only.
> > This posting is provided "AS IS" with no warranties, and confers no rights.
> >
> >
> > "Jim Applebury" <JimApplebury@discussions.microsoft.com> wrote in message
> > news:BD429E60-9CEF-41E7-A1DD-9356F0B5EDB8@microsoft.com...
> > > 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
> > >>
> > >> --
> > >> Please do not send e-mail directly to this alias. this alias is for
> > >> newsgroup purposes only.
> > >> This posting is provided "AS IS" with no warranties, and confers no
> > >> rights.
> > >>
> > >>
> > >> "Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in
> > >> message
> > >> news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...
> > >> > 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
> > >>
> > >>
> > >>
> >
> >
> >

Reply With Quote

Samuel

Guest
Posts: n/a

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

Posted: 01-23-2008, 02:11 AM

This is interesting, I found that only Windows XP (it could've been the
hardware at the time) turned the light off. My copy of Vista doe not. I would
like to get Windows Vista to always switch the power (and thus light off)
when I undock the USB. How can I do this please.

..A.

"Jim Applebury" wrote:

> Thanks Again... Had a hard time finding a definitive answer.
> Take Care Jim
>
> "Doron Holan [MS]" wrote:
>
> > 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
> >
> > --
> > Please do not send e-mail directly to this alias. this alias is for
> > newsgroup purposes only.
> > This posting is provided "AS IS" with no warranties, and confers no rights.
> >
> >
> > "Jim Applebury" <JimApplebury@discussions.microsoft.com> wrote in message
> > news:BD429E60-9CEF-41E7-A1DD-9356F0B5EDB8@microsoft.com...
> > > 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
> > >>
> > >> --
> > >> Please do not send e-mail directly to this alias. this alias is for
> > >> newsgroup purposes only.
> > >> This posting is provided "AS IS" with no warranties, and confers no
> > >> rights.
> > >>
> > >>
> > >> "Jim Applebury" <Jim Applebury@discussions.microsoft.com> wrote in
> > >> message
> > >> news:1108BEA0-245F-4EE3-A13C-0BAA439A20E6@microsoft.com...
> > >> > 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
> > >>
> > >>
> > >>
> >
> >
> >

Reply With Quote

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