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Charging from a computer

virus Avatar
6y, 2m agoPosted 6 years, 2 months ago
Does anyone know how to make the USB sockets on a computer "live" whilst it is charging, but switched off, so that other items can be charged from its USB ports?
virus Avatar
6y, 2m agoPosted 6 years, 2 months ago
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#1
Press the Live button on the USB hub underneath the thingymajig.
Then follow the on screen instructions on the monitor in the other office next to the toilet.
After that don't forget to reset your PC.
#2
virus
Does anyone know how to make the USB sockets on a computer "live" whilst it is charging, but switched off, so that other items can be charged from its USB ports?


I understood what you meant...

It is down to the laptop itself, not software you can run on it.

Some Toshiba laptops have this ability:
http://laptops.toshiba.com/research-center/technology-guides/sleep-and-charge
#3
If the computer is off there's no power to the usb ports, try putting it in hibernate or sleep
#4
yeah works on my toshiba netbook, but its only because of a special USB port and plugged in
banned#5
Buy a usb charging socket that you can plug into the mains
ebay 170543210340
#6
If you want to enable a permanent 5V supply from USB ports while the computer is switched off (I think this was the gist of the question), this requires jumper settings to enable the standby 5V from the PSU to supply the USB ports - of course, the PC must still be plugged into the mains socket. Some motherboards require a further setting in the BIOS to enable 5V standby supply. Look up the motherboard manual and it will explain how to bridge 2 pins of the USB controller to enable a 5V supply. It will be something along the lines of bridge pins 1 and 2 for a 5V supply and bridge pins 2 and 3 to turn it off. Also, you need to read the section on setting the BIOS as some boards require another BIOS setting to enable the 5V supply.

On laptops, it is not so simple, as some have stated as this may require dedicated powered USB ports. Some laptop board manufacturers implement supplying USB ports with a 5V supply but some do not with the ovious reason being that the laptop battery could be supplying the power.


Edited By: ElliottC on Sep 23, 2010 14:07: .
#7
It's a Toshiba I have - I thought there was a setting for this - thanks for confirming - and those who gave the "witty" answers about it not being possible should perhaps think of getting a Toshiba.
#8
sancho1983
If the computer is off there's no power to the usb ports, try putting it in hibernate or sleep


If mine goes to sleep it stops charging anything USBed to it.
#9
Penny Saver
sancho1983
If the computer is off there's no power to the usb ports, try putting it in hibernate or sleep
If mine goes to sleep it stops charging anything USBed to it.

That is correct. In sleep mode (and hibernation) all hardware devices are put to sleep too (except for RAM in the case of sleep) but this depends on the device power management settings (such as whether are able to go into sleep mode). Only when 5V standby power is enabled (via jumpers and BIOS) would the USB ports still be supplying 5V power during sleep and hibernation.

Edited By: ElliottC on Sep 23, 2010 15:30: .
#10
virus
It's a Toshiba I have - I thought there was a setting for this - thanks for confirming - and those who gave the "witty" answers about it not being possible should perhaps think of getting a Toshiba.

Is it a laptop or desktop PC? For laptops, it's a little different since 5V standby power woud depend on how the board is designed. Not all laptops support this and this is not dependent on specific laptop brands either.
#11
ElliottC
Not all laptops support this and this is not dependent on specific laptop brands either.


It can be Laptop brand dependent.

See my post above.

+ the OP talks about making the USB ports live when the computer is charging, so it must be a Laptop.

Edited By: adambaz on Sep 24, 2010 19:21: meh
#12
adambaz
ElliottC
Not all laptops support this and this is not dependent on specific laptop brands either.
It can be Laptop brand dependent.See my post above.+ the OP talks about making the USB ports live when the computer is charging, so it must be a Laptop.

The OP does indeed mention charging so the corollary is that a laptop is being used - I missed that.

By laptop brand dependent, are you pointing towards that all Toshiba laptops have standby 5V power to USB ports while plugged into the mains? Or is this a feature unique to Toshiba? Neither of them is correct hence it is NOT brand dependent. It is motherboard and BIOS dependent. This feature is available on many different brands of laptops but not on all models.

Edited By: ElliottC on Sep 24, 2010 19:48: .

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