Power connectivity
You must be aware that most countries have their own standards for electrical voltage and outlet points.
The problems of voltage have been taken care of by the manufacturers of computers and adapters by supplying multi-voltage adapters or transformers.
This however does not take care of your connection to the electric power outlet. It is advisable to purchase a conversion plug to accommodate your existing plug.
Also note that you might need to carry multiple adapters for your different connections (computer, modem, printer, etc.) to be active simultaneously.