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85DR / 85DRB
2-9.7 Thermal Sensor Connector RT1, RT2
PS/2Mouse
(on top)
PS/2 K/B
(underside)
USB0
(on top)
(underside)
USB1
SW1
On
ON
DIP
1
23 45
FAN 2
3
4
1
2
+12V Power
（85DR)
AC'97
Audio
AC'97
Audio
（85DRB)
Jp9
1
1. Connector RT1: A blue thermal resistor is already soldered to
connector RT1 so as to sense the temperature round the mainboad.
What RT1 does is to transmit the thermal signal to BIOS or Hardware
Monitor.
2. Connector RT2: A thermal cable is needed to connect RT2 to on-
board devices such as HDD, Graphics card etc., so as to detect the
temperature generated therein. Please connect the end (a) of the
thermal cable to mainboard RT2 header, and tape another end (b) of
thermal cable on to the device which you want to monitor. After you
have finished the thermal cable installation, you will see the detected
temperature in BIOS setup or Hardware monitor utility.
FAN 1
92
mPGA478B
1
1
RT2
i82845
Intel RG82845
Intel
1
AGP 4X
PCI 1
Intel
82801BA
PCI 2
PCI 3
BIOS
PCI 4
1
Jp15
PCI 5
WOL1
MEM1
PCI 6
USB1 Header
HDD/LED
- -
+
+
CNR
1
1
SPK S3/LED KEYLOCK
Jp2
1
Jp3
1
RT1 mounted with
blue Thermal Resistor
Jp4
1
JBAT1
1
To RT2
SCR1
FAN3
IR
SMI
30
15
+
-
SUS/LED
Thermal Cable
34
RT1
RT2
To Devices
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