Overstop

i have 2 pendrive, 1.- Kingston Datatraveler 16gb usb 2.0 2.- Generic 8gb usb 2.0 3.- Generic Bluetooth USB adapter 2.0 But the problem is continue Sorry for my bad english

Hi, im new in this forum, i dont speak english but i have a problem with USB to the keyboard. I connect my pendrive in the usb port. But windows tells me that you have problems with the lack of power for usb, or some lack of energy. The keyboard has 2 usb but I never used. Sorry for my bad english. Thanks. PD: i have lastet driver to the keyboard