So I've been meaning to buy a car charger for my laptop for an upcoming trip and since laptop chargers come in two pieces, was wondering if I could just buy a cord that connects from the cigarette lighter port to the transformer box (the mickey mouse shaped hole?). Since most laptop chargers come in two parts, I was thinking that I could find something that plugs into that box rather than buying both halves of another charger. The problem is I have no idea what that part is even called or if they just sell that part of chargers. Could anyone let me know what that half of the charger is called or where to find one? I'd really appreciate it.