Universal grounded plug?
 

Is there a universal plug that converts grounded to grounded, every country? Bits and pieces like a Schuko grounding collar exists but I would not call them universal.

Sorry I don't know an answer to your question but curiosity is getting the better of me: what are you travelling with that needs an earth connection?

I've never seen one with grounding, but that doesn't mean they don't exist.

I've never liked the all in one plugs anyways, they are sometimes too big for a recessed socket, or won't stay in without having something to prop them up, and if you forget it, you have lost all your plugs.

Right now it's just professional curiosity :) ever had one of those laptops that use a cloverleaf? Right. Sometimes the ground is used to ground the metal of the laptop (guess which high profile laptop maker makes metal laptops) and it's extremely dangerous to use a 2-to-3 with them.

How can it be a danger? A laptop power supply completely isolates you from the power....You have no physical connection.....You have hot, neutral (lets forget about the ground) Both of the hot and neutral are connected by a very long thin wire which is wound around and around and makes up a transformer. NO physical connection to power. ground. I could actually argue it is safer not have a ground.