Thanks for that, I wasnt su I knew that the 6A wouldn't be a
problem as the unit doesn't consume any more amps than it needs but
didnt know that if it only needed 19v, the adapter wouldnt just keep
on pumping 20v into it

I've used a 90 watt 20 volt adapter on a laptop which requires 19 volts
at 55 watts for maybe 2 years now with no apparent damage. 1 volt isn't
likely to be an issue and the laptop will not consume more power than it
needs.

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Live Fast, Die Young and Leave a Pretty Corpse