
Chapter 5: Advanced Serverboard Setup
5-19
Serial Ports
COM1 is located on the rear I/O panel.
COM2, located close to PCI-E Slot2,
provides front access support. See the
table on the right for pin defi nitions.
Serial Port Pin Defi nitions
Pin # Defi nition Pin # Defi nition
1 DCD 6 DSR
2 RXD 7 RTS
3 TXD 8 CTS
4 DTR 9 RI
5 Ground NC
Overheat LED/Fan Fail
The JOH1 header is used to connect
an LED to provide warning of chassis
overheating. This LED will blink to
indicate a fan failure. Refer to the table
on right for pin defi nitions.
Overheat LED
Pin Defi nitions
Pin# Defi nition
1 5vDC
2 OH Active
OH/Fan Fail LED
States
State Message
Solid Overheat
Blinking Fan Fail
Power SMB (I2C)
The Power System Management Bus
(I
2
C) header (JPI
2
C) monitors power
supply, fan and system temperatures.
See the table on the right for pin
defi nitions.
Power SMB
Pin Defi nitions
Pin# Defi nition
1 Clock
2 Data
3 PWR Fail
4 Ground
5 +3.3V
DOM Power Connector
A power connector for SATA DOM (Disk
On Module) devices is located at JSD1.
Connect an appropriate cable here to
provide power support for your DOM
devices.
DOM PWR
Pin Defi nitions
Pin# Defi nition
1 +5V
2 Ground
3 Ground
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