Mga brad! I am trying to replace my laptop's internal fan because it scrapes the plastic casing its enclosed in when it turns on which makes a lot of noise. Sometimes, it doesn't turn on at all. My question is, what is the usual fan voltage for laptops? I plan on using those small 12v auxiliary fans I saw in Fastwin yesterday but I also saw some small cooling fans for Graphics Cards (Nvidia) but I'm not sure what their voltages are. Can anybody help me with what kind of fan should I use? My laptops a Sony Vaio PCG-3E1M by the way.