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usb-no power
Name: bartek Date: January 19, 2007 at 17:41:45 Pacific OS: xp-home CPU/Ram: 1gb Product: hibrid
Comment:
Hi ! I can't charge the mouse thru usb when pc is off-no power on usb I change settings /uncheck box "allow computer to switch off this device to save power" but that do not work. has some of you have this problem? bartek
Name: USBheadache Date: January 19, 2007 at 22:34:29 Pacific
Reply:
When the computer is off, all the ports are off. The USB ports don't get power from the power cord, they get it from the power supply/motherboard. If you turn the computer off, nothing works in the USB ports.
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Response Number 2
Name: MONKMON Date: January 20, 2007 at 21:30:15 Pacific
Reply:
you wont get power to USB ports when the computer is off but that dont mean you cant charge your mouse when the computer is off simple solution to this is buy a powered USB port hub CyberPower has one that works great for that application product number is (CPH420P) i bought one that i use to charge my MP4 player when my computer is off works great
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Response Number 3
Name: Tubesandwires Date: January 21, 2007 at 15:34:21 Pacific
Reply:
Most bios Setups have a setting for USB Legacy support, or USB Keyboard support, or USB Keyboard and Mouse support, or similar, that is disabled by default. If you change that to enabled in the bios, save settings, there is 5 volts available on all the USB ports all the time the computer is plugged in to a power source, whether Windows is running or not.
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Response Number 4
Name: bartek Date: January 21, 2007 at 18:35:28 Pacific
Reply:
thanks for that.i was cheking the bios but not fund any setting to change power to usb.I have second pc/build m/s/asus crossfire motherboard amd5200,msi8800 and don't have this problem all usb have power all the time b
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Response Number 5
Name: Tubesandwires Date: January 21, 2007 at 22:38:33 Pacific
Reply:
Some newer mboards have Legacy USB, or simlar, enabled by default, since USB keyboards and mice are now common. I've never seen a mboard that has USB that does not have a setting like I described - look again. It's there so you can have the option of waking the computer, or not, depending on other bios settings, using a USB mouse or a USB keyboard, or so you can get into the bios with a USB keyboard, if it's enabled.
I confirmed enabling that works to charge something - I have a rechargable flashlight plugged in right now - it's led is on when it's charging - it stays on when Windows is Shut Down - it isn't on when the setting is disabled in the bios.
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