sticknstone Posted May 8, 2011 The inside front panel with a 250 mm fan running on a switch selectable 3.3v, 952 rpm, 248 cfm or 5v, 1304 rpm, 339 cfm or 12v, 2500 rpm, 650 cfm. The 2 - 80 mm fans run on a switch selectable 5v or 12v. Due to the start up amperes however, it is not advisable to switch fans while the pc is on because of tripping the psu. I am able to switch the 250 mm fan on and off at a voltage of 3.3. I tested the 250 mm fan which on 12v draws 4.28 amps and on start up draws just over 11 amps from what I could read on the meter. Link to comment
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