TYAN TEMPEST I5000VF Manual page 16

CN21
CN23
CN20
CN22
CN24
CN19
SATA 0/1/2/3/4/5
CN23 (FAN1): Chassis Fan Connector (used alone or with CN22/CN24)
Use this header to connect the chassis cooling
fan to your motherboard to keep the system at
optimum performance levels.
GND
Spe ed Con trol
12 V
Ta chometer
16