How can I change USB output voltage from mobo?

10ftcoke · Jun 21, 2013

I have a Sager 8662 laptop and a targus chilling mat, which cools the computer with two fans that draw power from the laptop's USB port.

When I game, the computer gets hot even with the chilling mat running so I would like to increase the fan speed. Since there is no driver associated with the targus chilling mat, the only way to increase the fan speed would be to manually increase the voltage supplied through the USB port.

I'd like to know how I could increase the USB voltage using software.

I'm fully aware of the risks of overvolting hardware.

Thanks in advance guys, just on an off note tomshardware is one of the most helpful forums out there for me.

4745454b · Jun 21, 2013

To my knowledge you can't. Or at least shouldn't. I'm pretty sure if you mod your board like you want, you are going to overvolt all the USB ports. Assuming you've done the math on the fans and you know they can take it, are you sure your other USB devices can?

Seeing as you only need the power wires, find a "wall wart" plug that has the power figures you want and splice a female USB plug into it. That way you don't ruin your latop. Much safer.

10ftcoke · Jun 21, 2013

That makes sense, though I wish there was some way to change individual USB port voltages at the OS level.

I'm currently doing something similar to that, right now I'm powering the cooling mat through the USB port of my Ipad's AC adapter. It outputs a noticeably higher voltage than the computer's USB ports, though I'd like more control over the exact voltage.

4745454b · Jun 21, 2013

Maybe someone else knows of a way. With my understanding of how things work you can't. I am by no means an expert on such things.

scout_03 · Jun 21, 2013

you could use something like this to power the chilling mat http://www.walmart.com/ip/Energizer-Dual-Universal-USB-Wall-Charger/17046065

4745454b · Jun 22, 2013

I don't think that will help any.

scout_03 · Jun 22, 2013

it will not help for the power but will be usefull to power the chillmat .

4745454b · Jun 22, 2013

? I'm lost. He asked for a way to supply more power to the fans, and your post doesn't answer that at all?

scout_03 · Jun 22, 2013

it will need a port like this one to get more power from the usb since it only give 5.0 volts and this powered usb give up12 to 24 volts so you dont have that in a laptop and there is no way it could raise the power on the usb port in a laptop without damaging something .http://en.wikipedia.org/wiki/Powered_USB

4745454b · Jun 22, 2013

From your link.

Output voltage: 5V DC

Again, don't see how that will help.

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How can I change USB output voltage from mobo?

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