Hey, would like to ask, whats the name of the memory card that vita use? Any brand suit or need to get back the vita brand memory card?

Would like to know whats the different between R1,R2 and R3 for game?

And any recommend seller to get memory card?

sifu at here, i just bought vita, i can connect to the internet at my home, but cant connect to office one, y a?

if is setting problem, what to do on settings to make my vita can connect to office?

office use tmnut