What is the size and name if the connector in the fan?

I think that if the entire disc drive, assembled with a simple click in connection, would be much easier and faster.

Why do they even make a filter? Is dumb, also they left it on the bottom where is harder to replace, they should it just had a second smaller battery that would be easy to replace, or something more efficient, more like a strong resistor or something else, also those parts shouldNOT be solder with the board, they should come integrated inside, which is better than javing them solder.