Hi ..... I have a new Inspiron 1501.

 

I have three problems with the 19.5 V power supply:

 

1 When I use the suppled 110v-240v AC unit connected to an inverter the mouse behaves irratically

 

2 The plug has three connections .... the outermost surface is -ve .... the inside of this outer surface supplies the 19.5v ........... the small pin at the centre supplie 0.5 V for what purpose?

I need to connect the computer to a power amplifier .... i.e. a unit that converts my yachts nominal 12v DC supply to a regulated 19v or 20v DC supply direct to the computer. Can I ignore this centre pin connection?

 

Thanks