Prevent Windows from putting +5 V on USB connector while off or inhibernation
 

Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

Thanks beforehand.

Fokke

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 4/2/2018 18:51, Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

What's the motherboard of the master PC? Any BIOS settings that links to
USB charging?


--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_...sub_addressesa

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 4-2-2018 12:51, Mr. Man-wai Chang wrote:
On 4/2/2018 18:51, Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

What's the motherboard of the master PC? Any BIOS settings that links to
USB charging?



It's an Asrock J3455 ITX.
I will have another look into the BIOS. Haven't found anything yet.

Fokke

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 4/2/2018 20:55, Fokke Nauta wrote:

It's an Asrock J3455 ITX.
I will have another look into the BIOS. Haven't found anything yet.

USB keyboard/mouse power on?

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_...sub_addressesa

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 4-2-2018 14:00, Mr. Man-wai Chang wrote:
On 4/2/2018 20:55, Fokke Nauta wrote:

It's an Asrock J3455 ITX.
I will have another look into the BIOS. Haven't found anything yet.

USB keyboard/mouse power on?


No, I don't use that. I'll have a look into it.
Perhaps I should disable all those functions.

Fokke

Prevent Windows from putting +5 V on USB connector while offor in hibernation
 

Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

Thanks beforehand.

Fokke

Maybe.

Modern motherboards, unfortunately, have no USBPWR 2x3 header
on the motherboard. Modern motherboards run the USB port from
+5VSB.

Older computers, each USB port had a jumper, and the jumper
selected +5V or +5VSB.

o----o === Jumper selects power source.
X X X The jumper position shown would
+5V Port +5VSB be the one you desire. +5V goes
PWR off when the computer sleeps, suitable
for tripping auxiliary equipment.

Modern motherboards don't have that option. They are permanently wired.
There is no jumper. Just copper traces on the PCB. This electrical
connection would be near (on one end of) the green Polyfuse. Since
all the USB ports use +5VSB, the power stays on during sleep. This
allows charging toys, or allows keyboard/mouse wakeup.

X----X
Port +5VSB
PWR

Only if the port has a downstream MOSFET switch, could the
+5VSB be turned off.

I notice that the Windows 10 power management tick boxes, look
different than the other OSes. The root hubs seem to have
power boxes, but not the devices themselves. Which implies
you don't have per-port control via Device Manager. Maybe your
tick boxes will look different ? Notice how my keyboard and mouse
have the box grayed out.

https://s9.postimg.org/av6lkak1b/win...ions_goofy.gif

Since I've seen what looks like the power going off, I assume
there's a way to do it. and there is a downstream MOSFET. However,
it isn't clear where that is located. It's not practical to be
doing that from the Southbridge, and the motherboard makers
hate to add stuff like that outside the Southbridge. After
all, they removed the USBPWR headers to save $0.05 per motherboard.

Paul

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 4-2-2018 15:04, Paul wrote:
Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

Thanks beforehand.

Fokke

Maybe.

Modern motherboards, unfortunately, have no USBPWR 2x3 header
on the motherboard. Modern motherboards run the USB port from
+5VSB.

Older computers, each USB port had a jumper, and the jumper
selected +5V or +5VSB.

o----o === Jumper selects power source.
X X X The jumper position shown would
+5V Port +5VSB be the one you desire. +5V goes
PWR off when the computer sleeps, suitable
for tripping auxiliary equipment.

Modern motherboards don't have that option. They are permanently wired.
There is no jumper. Just copper traces on the PCB. This electrical
connection would be near (on one end of) the green Polyfuse. Since
all the USB ports use +5VSB, the power stays on during sleep. This
allows charging toys, or allows keyboard/mouse wakeup.

X----X
Port +5VSB
PWR

Only if the port has a downstream MOSFET switch, could the
+5VSB be turned off.

I notice that the Windows 10 power management tick boxes, look
different than the other OSes. The root hubs seem to have
power boxes, but not the devices themselves. Which implies
you don't have per-port control via Device Manager. Maybe your
tick boxes will look different ? Notice how my keyboard and mouse
have the box grayed out.

https://s9.postimg.org/av6lkak1b/win...ions_goofy.gif

Since I've seen what looks like the power going off, I assume
there's a way to do it. and there is a downstream MOSFET. However,
it isn't clear where that is located. It's not practical to be
doing that from the Southbridge, and the motherboard makers
hate to add stuff like that outside the Southbridge. After
all, they removed the USBPWR headers to save $0.05 per motherboard.

Paul

Hi Paul,

Thanks for your extensive info.
And thanks for the picture. I see the same options to power down the USB
hubs. But I don't know as to whether this is when the system is powered
up or in sleep mode. I'll have a look into this.

Fokke

Prevent Windows from putting +5 V on USB connector while offor in hibernation
 

On 2/4/2018 7:02 AM, Fokke Nauta wrote:
On 4-2-2018 15:04, Paul wrote:
Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

Thanks beforehand.

Fokke

Maybe.

Modern motherboards, unfortunately, have no USBPWR 2x3 header
on the motherboard. Modern motherboards run the USB port from
+5VSB.

Older computers, each USB port had a jumper, and the jumper
selected +5V or +5VSB.

o----o === Jumper selects power source.
X X X The jumper position shown would
+5V Port +5VSB be the one you desire. +5V goes
PWR off when the computer sleeps, suitable
for tripping auxiliary equipment.

Modern motherboards don't have that option. They are permanently wired.
There is no jumper. Just copper traces on the PCB. This electrical
connection would be near (on one end of) the green Polyfuse. Since
all the USB ports use +5VSB, the power stays on during sleep. This
allows charging toys, or allows keyboard/mouse wakeup.

X----X
Port +5VSB
PWR

Only if the port has a downstream MOSFET switch, could the
+5VSB be turned off.

I notice that the Windows 10 power management tick boxes, look
different than the other OSes. The root hubs seem to have
power boxes, but not the devices themselves. Which implies
you don't have per-port control via Device Manager. Maybe your
tick boxes will look different ? Notice how my keyboard and mouse
have the box grayed out.

https://s9.postimg.org/av6lkak1b/win...ions_goofy.gif

Since I've seen what looks like the power going off, I assume
there's a way to do it. and there is a downstream MOSFET. However,
it isn't clear where that is located. It's not practical to be
doing that from the Southbridge, and the motherboard makers
hate to add stuff like that outside the Southbridge. After
all, they removed the USBPWR headers to save $0.05 per motherboard.

Paul

Hi Paul,

Thanks for your extensive info.
And thanks for the picture. I see the same options to power down the USB
hubs. But I don't know as to whether this is when the system is powered
up or in sleep mode. I'll have a look into this.

Fokke
If all else fails, modify a USB cable to pull the +5V out
and use a supply that switches when you want...maybe a wall wart
plugged into the switched AC.

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 02/04/2018 05:28 PM, mike wrote:

[snip]

If all else fails, modify a USB cable to pull the +5V out
and use a supply that switches when you want...maybe a wall wart
plugged into the switched AC.

This sounds like something I've considered to disable the keyboard /
mouse when cats get too close. I want a box with 3 buttons. One (easy to
press quickly) turns power off and the other 2 (BOTH must be pressed
simultaneously, so the cat i unlikely to do it) to turn it back on.

--
Mark Lloyd
http://notstupid.us/

"The true contrast between science and myth is more nearly touched when
we say that science alone is capable of verification." [George Santayana
(1863-1952), "The Life of Reason" (1905-1906)]

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 2018-02-04 07:55, Fokke Nauta wrote:

On 4-2-2018 12:51, Mr. Man-wai Chang wrote:
On 4/2/2018 18:51, Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

What's the motherboard of the master PC? Any BIOS settings that links to
USB charging?

It's an Asrock J3455 ITX.
I will have another look into the BIOS. Haven't found anything yet.

On my ASUS board BIOS, that feature is called ERP-Ready. When you enable
ERP-Ready, S4/S5 will power-off more stuff, like the sound amplifier,
ENET and the USB ports, whereas when ERP is disabled all kinds of stuff
remains powered.

Regards,

--
! _\|/_ Sylvain /
! (o o) Member:David-Suzuki-Fdn/EFF/Red+Cross/SPCA/Planetary-Society
oO-( )-Oo INPUT: Food, beverages, painkillers, stimulants, etc...

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 6-2-2018 07:37, B00ze wrote:
On 2018-02-04 07:55, Fokke Nauta wrote:

On 4-2-2018 12:51, Mr. Man-wai Chang wrote:
On 4/2/2018 18:51, Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

What's the motherboard of the master PC? Any BIOS settings that links to
USB charging?

It's an Asrock J3455 ITX.
I will have another look into the BIOS. Haven't found anything yet.

On my ASUS board BIOS, that feature is called ERP-Ready. When you enable
ERP-Ready, S4/S5 will power-off more stuff, like the sound amplifier,
ENET and the USB ports, whereas when ERP is disabled all kinds of stuff
remains powered.

Regards,


Thanks,
I will have a look into it.

Fokke

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 4-2-2018 11:51, Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

Thanks beforehand.

Fokke

Thank you all for your replies and help.
However, I didn't manage. Went through the BIOS, changed values in W10
(Thanks, Paul). The +5 V remains on the USB ports, even when it is
powered down.

Fokke

Prevent Windows from putting +5 V on USB connector while off orin hibernation
 

On 10/2/2018 02:18, Fokke Nauta wrote:

Thank you all for your replies and help.
However, I didn't manage. Went through the BIOS, changed values in W10
(Thanks, Paul). The +5 V remains on the USB ports, even when it is
powered down.

Maybe all +5V are using one set of wires that's linked to the power-on
mechanism? I don't do electronics.... just a guess. ;)

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_...sub_addressesa

Prevent Windows from putting +5 V on USB connector while offor in hibernation
 

Fokke Nauta wrote:
On 4-2-2018 11:51, Fokke Nauta wrote:
Hi all,

Using a server in our LAN (W10 pro 64b). It is using a master-slave
mains power connector, which works by a USB cable. When the server is
on, the slave power connector is on, and from there the other pc's and
the switch and router get their mains power.
This works well, but when the server is down (switched off or in
hibernation), there is still +5 V on the USB connectors, causing the
slave mains supply to remain on.
Is there any chance to shut down the USB connectors as well when the
server is off or in hibernation mode?

Thanks beforehand.

Fokke

Thank you all for your replies and help.
However, I didn't manage. Went through the BIOS, changed values in W10
(Thanks, Paul). The +5 V remains on the USB ports, even when it is
powered down.

Fokke

https://answers.microsoft.com/en-us/...9aeb8d1?auth=1

Some users are apparently getting what they want
by disabling Fast Start.

The "Powercfg -h off" thing is a similar hibernation-related
setting.

Now, the computer doesn't care what happens after it's hibernated,
so I don't understand why that necessarily turns off the USB power.
It's almost like someone at Microsoft doesn't want you starting
a machine by pressing the keyboard... when it's hibernated ???

Paul