... holding,no rebound 4,high flexiblity,no noise when swing USB LED Light!!*One high brightness white LED*Working volt:DC ... 5v,working current:20maProduct Specifications :1.)USB LED light for notebook2.)Bright without frequency change3.)Can be ... reliability, high efficiency5.)No external power source needed6.)Connectable to USB ports on any iBook, PowerBook, Cube, PowerMac, PC or PC ...