User guide

2-30 Chapter 2: Hardware information
10. Serial port 2 connector (10-1 pin COM2)
This connector accommodates a second serial port using an optional
serial port bracket. Connect the bracket cable to this connector then
install the bracket into a slot opening at the back of the system chassis.
If you installed a server management card, the COM2 connector
becomes a null modem and serves as console.
11. Power supply SMBus connector (5-pin PSUSMB1 )
This connector is for the power supply SMBus cable, if your power
supply supports the SMBus function.
PCH-DR
PCH-DR Serial Port2 (COM2) Connector
PIN 1
COM2
PCH-DR
PCH-DR Power Supply SMBus Connector
PSUSMB1
+3.3V Remote Sense
GND
NC
PSU_I2CDATA
PSU_I2CCLK