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#1
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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 |
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#2
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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 |
#3
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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 |
#4
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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 |
#5
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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 |
#6
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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 |
#7
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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 |
#8
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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. |
#9
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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)] |
#10
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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) Memberavid-Suzuki-Fdn/EFF/Red+Cross/SPCA/Planetary-Society oO-( )-Oo INPUT: Food, beverages, painkillers, stimulants, etc... |
#11
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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 |
#12
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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 |
#13
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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 |
#14
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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 |
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