PC Ekspert Forum - Gigabyte EP35-DS3 sys

kao što rekoh, BIOS smartfan funkcija postoji jedino za CPU fan.

izguglo:

From Janus Yeh, GB support:
"CPU_FAN connector needs a CPU cooler with four wires were the PWM modulator is included in the cooler. The mobo senses the CPU temperature and managing the pin 4 signal, the cooler's fan will automatically be increased or decreased, following the CPU temp. Fan's rotation feedback returns via pin 3 for BIOS alarm feature.

SYS_FAN2 connector needs any fan, with three or four wires (don't care) since the speed is controlled via on-board PWM controller that supply pulse-width-modulated 12v for the fan via pin 2.
So, if using a four wire fan, its internal PWM is locked to full speed (this explain that fixed 5v on pin 4).
This time, the mobo senses the North Bridge (in my case the P35) temperature and will increase or decrease the speed of the fan connected in this socket. Feedback is sent to pin 3 for BIOS alarm purposes.

SYS_FAN1 and PWR_FAN are three pin socket with fixed full speed fan. No controlled rotation at all from the mobo. Rotation feedback also monitored via pin 3 only for BIOS alarm purpose."

znači ako želim da mi se sys_fan2 normalno vrti treba ugrijat NB :D