Wait so what's the advantage of this over the free adapter your laptop came with? It says its smaller, and yes it does look marginally smaller (not enough to ma

Wait so what's the advantage of this over the free adapter your laptop came with? It says its smaller, and yes it does look marginally smaller (not enough to make a difference to me personally), but is that it? You can charge another USB device with it, but my Surface Pro charger offers that too. Am I missing some other USP that would make it worth buying this as an upgrade? I can see this being useful when licensed to laptop manufacturers, but not as an aftermarket upgrade.