Thermaltake Smart Fan II question

Cheetah8799

Diamond Member
Apr 12, 2001
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I recently bought a couple Thermaltake Smart Fan II 80mm fans from the FS/FT forum. (you may see my thread where they guy selling to me was very poor seller).

Anyway, the fans have the usual 3-wire connector to plug into the mobo. Nothing special there. But they also have 4 other wires coming out of the fan, but they were snipped off and only about 2" left of bare leads. I'd like to know what those wires are for. I'm assuming they were for maybe a thermal probe to control fan speed based on temperatures?

If anyone knows for sure, and maybe knows a cheap way I can solder on my own thermal probe, if that's what is supposed to be there, that would be awesome.

thanks.
-Josh


EDIT: So I looked at the retail box, and it looks like the 2 red wires are for the thermal sensor, which can be jumpered for full speed mode. The 2 yellow wires are for the rheostats that is bundled with the hsf from Thermaltake that can control the fan speed manually. I may be wrong, the pics on the box are really small, but that's what it looks like at least. Anyone that can confirm this?
 

Joemonkey

Diamond Member
Mar 3, 2001
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I can confirm it for you. can't guarantee you the wire colors because on my fans they are heatshrunk, but one connector is for a thermal sensor that controls fan RPMs, the other is for a rheostat connector so you can manually control the RPMs
 

Cheetah8799

Diamond Member
Apr 12, 2001
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Thanks. I tested the fans just a minute ago, damn are they loud! Full rpms and they were sliding across the table and louder than all my computers combined! I hooked them each up to my Vantec Nexus and they were really quiet on the lowest setting, but the second I turned them up they became super loud with hardly any extra airflow. stupid fans...