I will be traveling to Korea soon, and need to know exactly what type of adapter I need in order to have my devices safely work. I don't want to run the risk of frying anything. I heard Korea uses 220V and in the USA its 110V. Is there an adapter of some sort I can use? I don't want to spend an arm and leg for this. So if someone can recommend or point me in the right direction, I'd greatly appreciate it.