Hi,
I have bought a ga-p55m-ud2 motherboard and am very happy with it, except for only one issue. On my case I have a 12V 120mm case fan (3-pin), which I plugged to the SYSFAN connector on the motherboard as described in the doc. The issue is that although the SYSFAN connector should provide up to 12V (according to the doc), the fan does not start.
If I blow on or spin the fan, however, it starts and stays low speed (~400-500 rpm). It seems that the SYSFAN voltage is regulated according to temperature, and only provides 5V at start, which is not sufficient to start the fan (but once the fan has started, it can be maintained at low speed with this voltage). This is a well known issue for many 12V fans: they can run under low voltage, but cannot be started with only 5V.
What the motherboard should do, is provide 12V during POST, then reduce voltage subsequently, depending on temperature. Could this be fixed in a future bios release ? I have sent the same question to the Gigabyte support (Gigabyte Technical Service), but did not get any answer. Maybe some Gigabyte official could forward this request or give me a solution ?
Thanks a lot in advance.
I have bought a ga-p55m-ud2 motherboard and am very happy with it, except for only one issue. On my case I have a 12V 120mm case fan (3-pin), which I plugged to the SYSFAN connector on the motherboard as described in the doc. The issue is that although the SYSFAN connector should provide up to 12V (according to the doc), the fan does not start.
If I blow on or spin the fan, however, it starts and stays low speed (~400-500 rpm). It seems that the SYSFAN voltage is regulated according to temperature, and only provides 5V at start, which is not sufficient to start the fan (but once the fan has started, it can be maintained at low speed with this voltage). This is a well known issue for many 12V fans: they can run under low voltage, but cannot be started with only 5V.
What the motherboard should do, is provide 12V during POST, then reduce voltage subsequently, depending on temperature. Could this be fixed in a future bios release ? I have sent the same question to the Gigabyte support (Gigabyte Technical Service), but did not get any answer. Maybe some Gigabyte official could forward this request or give me a solution ?
Thanks a lot in advance.
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