Is a good mouse necessary for LOL?

I'm buying a laptop from my brother, I made a test game of it on the graphics and keyboard was allright OK, but the mouse did not work that was such a $ 5 mouse holding really bad the game could not play properly so it was but on the laptop or on the mouse (my right mouse had not found) so the question

That's exactly what I would ask: Is a good pen necessary to write a shopping list?

What exactly was not?

If it was too slow, it depends on your mouse settings.

If the mouse is completely not found either a loose connection or software error.

With a cheap mouse you can still gamble normal.

Aha LoL compare with a shopping list I consider inappropriate.