A 19.5V 6.7A charger with a 7.4mm x 5.0mm round pin provides 130 Watts of power.
This high-wattage charger is used for many of Dell's more powerful laptops, particularly
those with dedicated graphics cards or larger screens.
This is a very high-wattage charger used exclusively for Dell's most powerful and demanding laptops,
such as mobile workstations and high-performance gaming machines.