I just bought an ECS K7S5A motherboard and put it in a case with two fans (three if you count the power supply fan). The motherboard only has two 3-pin fan connections, though, and one is being used by the front case fan and the other is being used by the CPU fan. So, my problem is that the rear case fan has a three-pin plug but nowhere to plug in. I take it my solutions are to (1) not use the rear fan (which is the solution currently being implemented -- I don't think the fan is critical); (2) get a 3-pin to 4-pin adapter; or (3) get a new fan that uses a 4-pin connector. Fans are cheap and easy to find, so that's not an issue if I decide to go that route. I have never looked for the pin adapter, though. Does anyone know what kinds of B&M stores carry these adapters and how much they are likely to cost.