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USB Keyboard?

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Old Sep 20, 2009, 11:38 PM   #1
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??? USB Keyboard?
System power on by usb keyboard/mouse? - impossible or depending on mobo?
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Old Sep 20, 2009, 11:55 PM   #2
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Re: USB Keyboard?
I think impossible, USB ports aren't fed 5V while system is off so KB and mouse would be turned off as well....... I haven't seen a board that has an option for this either. (I also haven't seen a lot of new boards, so maybe they're out there now)
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Old Sep 21, 2009, 12:13 AM Threadstarter Thread Starter   #3
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Re: USB Keyboard?
Hmm, thanks for the feedback! - pitty Microsoft does not include a ps2 adapter with their retail keyboards. That really annoys me.

there is 5V in that port and I think it could be done easily by changing mobo design a little bit. I faintly recall I had a mobo a few years back where it worked
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Old Sep 21, 2009, 08:17 PM   #4
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Re: USB Keyboard?
Yeah the PS2 port would do that I think but I'm not sure. The only thing that usb devices will do is wake a computer if its hibernating or something similar but it can't be completely shutdown unfortunately.
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Old Sep 22, 2009, 06:01 PM   #5
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Re: USB Keyboard?
some motherboards keep the USB power fed even when off... i've actually got an older one with as Asus board in it i think that via USB keyboard can turn it on....

So it's not impossible... it's very much mobo specific i think

not many people use keyboard power up.....
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Old Sep 22, 2009, 10:42 PM Threadstarter Thread Starter   #6
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Re: USB Keyboard?
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Originally Posted by Judas View Post
some motherboards keep the USB power fed even when off... ....
have had such a board myself a couple of years back. Technology is advancing backwards fast. Now on a AM3 board things no longer work that were still working, on a 939 socket board, like HDD temperature under AHCI or keyboard power on.
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Old Sep 23, 2009, 12:48 AM   #7
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Re: USB Keyboard?
i think they are taking the "green" stuff to the max.

shutting off standby power and so forth..

Usually a setting can be adjusted in the bios.. but i haven't really bothered looking or trying.... i use a power button the computer... not sure why hitting a keyboard is gonna make it any easier... actually it's more annoying considering a keyboard button being pushed accidently
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Old Sep 23, 2009, 01:49 AM Threadstarter Thread Starter   #8
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Re: USB Keyboard?
..and once your power button fails you have no second chance like mouse/keyboard power on

I am used to keyboard power on (any key/password) since years
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Old Sep 23, 2009, 05:26 PM   #9
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Re: USB Keyboard?
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Originally Posted by CitySlicker View Post
..and once your power button fails you have no second chance like mouse/keyboard power on

I am used to keyboard power on (any key/password) since years

i've seen at least 5 times as many keyboard failures then i have power buttons..

the only reason i've seen a power button fail is due to punching it
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