Have a 40W power supply - will it power a laptop that needs 65W?
I know that the basic calculation, voltage x amps = required wattage, so 18.5v x 3.5A =65W
I realise that it should only draw the power it needs, but in practice, will it damage anything? Can supplying not enough power cause problems?
Bottom line is, I'm trying to under-power the laptop.....