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Chapter 5: Advanced Serverboard Setup
5-17
ATX PS/2 Keyboard and
PS/2 Mouse Ports
The ATX PS/2 keyboard and PS/2
mouse are located on the
backplane. See the table at right
for pin definitions. (See Figure 5-
3 for the location of each port.)
PS/2 Keyboard
and Mouse Port
Pin Definitions
Pin
Number
1
2
3
4
5
6
Definition
Data
NC
Ground
VCC
Clock
NC
Serial Ports
The COM1 serial port is located on
the backplane and the COM2
header is located on the corner of
the board near the FAN3 header.
See the table on the right for pin
definitions.
Fan Headers
There are five fan headers (FAN1-
FAN5) on the serverboard. See
the table on the right for pin defini-
tions.
Note: These fan headers are 4-
pin fans. Pins#1-#3 of the fan
headers are backward compatible
with traditional 3-pin fans. Fan
speed is controlled by Thermal
Management via a BIOS setting.
The default setting is disabled.
When using a Thermal Manage-
ment setting, please use all 3-pin
fans or all 4-pin fans on the
serverboard. Do not use 3-pin
fans and 4-pin fans on the same
board.
Fan Header Pin Definitions
Pin #
1
2
3
4
Definition
Ground (black)
+12V (red)
Tachometer
PWR_Control
Caution: These fan headers
use DC power.
Serial Port Pin Definitions
(COM1, COM2)
Pin Number Definition
1 DCD
2 DSR
3 Serial In
4 RTS
5 Serial Out
Pin Number Definition
6 CTS
7 DTR
8 RI
9 Ground
10 NC