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Serial Port Header
(9-pin COM1)
(see p.6, No. 23)
Clear CMOS Pad
(CLRMOS1)
(see p.6, No. 14)
PSU SMBus
(PSU_SMB1)
(see p.6, No. 5)
Intelligent Platform
Management Bus Header
(4-pin IPMB_1)
(see p.6, No. 21)
Baseboard Management
Controller SMBus Header
(5-pin BMC_SMB1)
(see p.6, No. 22)
24
RRI#1
RRTS#1
CCTS#
DDSR#1
GND
DDTR#1
TTXD1
RRXD1
1
+3VSB
GND
ALERT
SMBDATA
SMBCLK
1
IPMB_SDA
IPMB_SCL
GND
No Connect
BMC_SMB_PRESENT_1_N
Power
BMC_SMBCLK
GND
BMC_SMBDATA
This COM header supports a
serial port module.
DDCD#1
CLRMOS1 allows you to clear
the data in CMOS. To clear
CMOS, take out the CMOS
battery and short the Clear
CMOS Pad.
PSU SMBus monitors the
status of the power supply, fan
and system temperature.
This 4-pin connector is used
to provide a cabled base-board
or front panel connection for
value added features and 3rd-
party add-in cards, such as
Emergency Management cards,
t h a t p r o v i d e m a n a g e m e n t
features using the IPMB.
The header is used for the SM
BUS devices.
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