Once upon a time each phone brand had its own charger type. But common sense prevailed, hastened by the European Union, and everyone agreed on USB starting first with mini then micro connector. For more on this story you can read here, here and here.
Apple has been a notable exception but it has gazillion phones out there using only one type of connector.
But it seems the day the rain of common sense fell the laptop manufacturers had umbrellas. Different charger types even along same product brand. It’s hell. It doesn’t make sense. It is stupid.
There is nothing technical about this after all almost all laptops in the world are made by just 5 companies – Quanta, Compal, Wistron, Inventec and Asus. The last has since established its own brand. I use its excellent Asus RTN66R VPN Router in my lair.
Good night fellas.