Alienware M11X R2. It's not really advertised, I just noticed the option in the bios one day - http://www.techmonsters.com/DellTraining/bin/Foundation2010/Porta

Alienware M11X R2. It's not really advertised, I just noticed the option in the bios one day - http://www.techmonsters.com/DellTraining/bin/Foundation2010/Portables_Foundation_2010/Alienware/M17x/M17X/usb_powershare.htm http://www.techmonsters.com/DellTraining/bin/Foundation2010/... . It's ridiculously useful when travelling - if I don't use my laptop I get an extra 2/3 days worth of battery for my phone.