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HDD/FP UID Button
The HDD/UID button connections are
located on pins 13/14 of JF1. Attach a
hard-drive LED cable to display HDD or
SATA activity. This connection can also be
used for the front panel UID (Unit Identi-
fi er) button. (The UID LED on pin 7 of JF1
works in conjunction with the UID button.)
When the user presses and releases the
UID button, the UID LED will be turned on
or off to indicate the location of the unit in
a stack or rackmounted servers.
Power On LED
The Power On LED connector is located
on pins 15 and 16 of JF1. This connection
is used to provide LED indication of power
being supplied to the system. See the table
on the right for pin defi nitions.
Fan Headers
The X9DRG-HF/X9DRG-HTF has twelve
fan headers. Fans 1~4 are for CPU/system
use and Fans A~H for GPU use.. All are
4-pin fan headers, which are backward
compatible with traditional 3-pin fans.
However, fan speed control is available for
4-pin fans only. See the table on the right
for pin defi nitions.
Serial Ports
A COM Port (COM1) is located next to
the UID switch to provide serial port sup-
port. See the table on the right for pin
defi nitions.
Chapter 5: Advanced Serverboard Setup
HDD/UID LED
Pin Defi nitions (JF1)
Pin#
13
14
Pin Defi nitions (JF1)
Pin#
15
16
Pin Defi nitions
Pin#
Defi nition
1
Ground
2
+12V
3
Tachometer
4
Pulse Width Modulation
Serial Port Pin Defi nitions
Pin #Defi nition
1
DCD
2
RXD
3
TXD
4
DTR
5
Ground
5-17
Defi nition
UID Signal/3.3V
HDD Activity
Power LED
Defi nition
+3.3V
Control
Fan Header
Pin # Defi nition
6
DSR
7
RTS
8
CTS
9
RI
10
NC
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