DV2FOX

I tooked a moment to open the case and noticed that the way the original fan is connected like is the same as my 2nd TT 200mm fan ontop that i added some time ago, but the default one is a 3 pin while the new one is a 4 pin connected to a 1 to 2 way cable extension because "it was short". I disconnected the fan from the mini motherboard (ofcourse turn off the tower first) and it stopped working but the rest worked, so i guess it should be easy (Aka not connected to any PSU molex = No problem). The question now are the mounting holes, since the new 200m fan came with different bolts than the original fan, but the BQ! fans comes with a "stick bolt" with a rubber circle (or not) to mount, so i guess it should be ok to mount easily on the top area without making em wobble?

I'd like to dismount my top fan from my Core V71 to replace it with 2 140mm fans that are faster and well, exhausts even more air The thing that i'm worried about is that: If i dismount the top fan , will it might make the front fans to not work?. I mean, i actually don't know if the top fan has a separate connection to the case's top "mini motherboard" or if it's connected to the front one, meaning i'm screwed up or not.. Any help?. The manual DOESN'T HELPS. The replacement fans are 2 BeQuiet! Silent Wings 3 140mm 1600RPM PWM