I'm buying new fans for my machine right now, and it seems that everyone prefers using 3-pin fans over 4-pin fans these days. If my motherboard has 4-pin fan connectors, do I need to use all 4 pins or can I plug a 3-pin adapter into the three critical pins? Should I buy an adapter or not?
3-pin fans will work just fine with 4-pin connectors. If you had 4-pin fans and 3-pin connectors on the motherboard your fans would still work but at full speed.