I guess your looking to turn this feature on. check the BIOS, check that EUP is turned OFF.
I know in my desktop I can turn it on/off in Ai tweaker on an ASUS board.
Do you know what motherboard in in that laptop?
EUP is a power saving feature when turned ON, Failing that can you see anything in the device manager under USB > USB hub > power tab. On my desktop I don't get any options but not sure if that's because of my board, because its a desktop or what.
If you can find out the name of your motherboard by using http://www.piriform.com/speccy then maybe you can google around for more specific answers.