MAN-DXB-HKG

I was just wondering what the power ports are like on the 777-300ER, because my laptop is from the UK and hence has the 3-pin power connection, so wanted to know if i needed to buy a converter beforehand so that i can charge my laptop on the plane.

also the emirates website says:

"An in-seat power supply and a USB connection allow passengers to view videos and pictures from their laptops or portable devices"

when searching through google i found that alot of people were saying that you could view pictures but not movies? because i would have loved to thrown a few divx movies onto a USB and watch them on the seat screen instead of the laptop screen.

Thanks Guys