FREQ_START1SPIN_START2ADD13ADD04WD_START5XTAL26XTAL17GND8TACH69PWMOUT610TACH511PWMOUT512TACH413PWMOUT414TACH315PWMOUT316TACH217PWMOUT218TACH119PWMOUT120VCC21SDA22SCL23FAN_FAIL#24PWM_START025PWM_START126FULL_SPEED#27CLKOUT28EP29