Bought a new computer recently and just noticed that the AC power supply (charger) has an output of 19V. The computer specifies 19.5V.
Searching around the GtoG forum, phillpower2 is pretty adamant that the voltage should be exactly the same. (Amperage and wattage the same or more.) I contacted the retailer about ordering a replacement charger but if the one sold with the computer (provided by the manufacturer, I assume) is not matched correctly, then maybe I need to rethink my purchase.