Ckitze Italy Universal to Italian Travel Power Plug Adapter

don't you need a three prong plug, grounded to have the plug from your computer fit?

Can a 2 prong voltage converter be plugged into this and work to convert voltage?

I have a 2 prong european plug converter. Will it work with this adapter in Rome?

What is the maximum wattage/amp capacity for this adapter (e.g. max capacity up to 3000 watt (max 250 volt, 13 a) )?