![]() ![]() Each of these can let you connect two of your normal fans to a single mobo header, which all headers can do. NOTE that this item has only one input (female) connector to a mobo fan header, and two output (male) "arms" for the fans it has NO third type of "arm" that goes to a PSU power output. Your simple solution is a pair of 2-output SPLITTERS, like this Still, that only MIGHT get you one more header to use. They allow you in BIOS Setup to choose whether it really is running a pump, or is re-purposed to run a normal case vent fan using the mobo temperature sensor and actually doing fan speed control. SOME (not all) mobos make the PUMP header a dual-option one. HOWEVER, check your mobo manual about that header. So, using the CPU_OPT for a case vent fan is not ideal because it is guided by the wrong temperature.Īs you have realized, a PUMP header normally does no speed control. The three mobo case fan headers you have use a different temp sensor on the mobo for their guidance. The CPU_FAN and CPU_OPT headers use only the temp sensor built into the CPU chip. Why not ideal? Your mobo basically has two groups of fan control systems, and each is based on a temperature sensor to decide what fan speed to run. It is not ideal and you should change it, but as a quick thing to get going NOW go ahead. You can do that, and it will not harm anything. ![]()
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