180w

Hello i have dell Precision m4700 and my 180w dell charger plug was broken so i buy new cheap hp charger and cut it to replace but i see dell have 3 wires black, white and green and hp have only red and white what to do how to fix and replace dell laptop plug?

Hello, i have this amp http://store3.sure-electronics.com/2-x-15-watt-class-d-audio-amplifier-board-ta2024 i have connected 2 60w 4ohm speakers to it, since it gives 15w both channels each, that means that both of my speakers give 15w individually right?. So can i just unhook second speaker and...