xiaowhois
Arch-Supremacy Member
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This seems to be the USB charging port Alienware branded as USB PowerShare. Touted to charge your USB devices even when system is off. This can leads people into thinking that they can actually shutdown their Alienware laptop entirely and still charge from that special port.
I was rather skeptical of their claim as i haven't really come across any laptop or desktop that can actually charge USB device in cold shutdown mode. My own laptops and ASUS and ASRock desktop motherboards were only able to charge either when PC is on or USB device must be plugged in before putting PC into sleep mode. They do not work when i tried to do a cold shutdown or plug in after sleep, USB devices simply loses the charging mode.
After taking a deeper look into their technology, I was right. USB PowerShare will not be able to charge your USB device when system is doing cold shutdown in battery mode. Their info on web support mentioned that you can only charge devices after shutdown only in AC mode. That also doesn't imply you can plug in to charge after shutdown completed, you have to plug it in before shutting down. And battery charge capacity level must be more than 25%.
Their claim is simply too vague and rather misleading. This charging function also doesn't work out of the box, where you need to enable it from BIOS first before you can use. So users ought to take note that this USB PowerShare feature is no different from other USB sleep charging technology found on other laptops and motherboards.
And I will not encourage anyone to use it for charging in off mode as it is not any more convenient than your standalone USB wall adapter or powerbanks. With USB port active also means part of your PC motherboard circuitry will be powered as well, consuming more power to run it than a standalone USB powerbank/adapter will do.
http://www.dell.com/support/article/us/en/19/SLN116179/EN
http://www.dell.com/support/article/us/en/04/SLN155147/EN
http://forum.notebookreview.com/threads/help-with-usb-powershare.747338/
How much ampere current max pass thru from those Alienware gaming laptop's usb port?
you can only charge devices after shutdown only in AC mode. That also doesn't imply you can plug in to charge after shutdown completed, you have to plug it in before shutting down. And battery charge capacity level must be more than 25%.
so many T&C just to use alienware laptop usb port to do charging when the laptop is in shutdown mode
nowadays many AC usb charger around some even have 4-5 ports enough to charge your own family's usb devices hardly got ppl use computer to charge computer usb port slower than those charger also.

If Dell Alienware Graphics Amplifier generate that much heat generate so much heat and needs an aircon room, I guess this system would be a failed product.
