Asus RS120-E4/PA2 - Manual (Page 57)

ASUS RS120-E4/PA2 4-11
5. System and device fan connectors (3-pin FRNT_FAN1/2/3/4;
REAR_FAN1/2)
The fan connectors support the system and device fans. Connect the
backplane fan cable to the FRNT_FAN4 connector on the motherboard,
making sure that the black wire of each cable matches the ground pin of the
connector.
These are not jumpers! Do not place jumper caps on the fan connectors!
4. Hard disk activity LED connector (4-pin HDLED1)
For some storage cards, such as SCSI card, with access signals for external
LEDs, this connector allows the access signals to go through the front panel
IDE_LED lead.
P5M2-R
®
P5M2-R Hard disk activity LED connector
HDLED1
1
ADD_IN_CARD_ACT#
NC
ADD_IN_CARD_ACT#
NC
P5M2-R
®
P5M2-R Fan connectors
FRNT_FAN1
REAR_FAN1 REAR_FAN2
GND
FAN Power
FAN Speed
PWM Control
GND
FAN Power
FAN Speed
PWM Control
GND FAN Power FAN Speed PWM Control
FRNT_FAN2
GND FAN Power FAN Speed PWM Control
FRNT_FAN3
GND FAN Power FAN Speed PWM Control
FRNT_FAN4
GND FAN Power FAN Speed PWM Control