28
Chassis Intrusion Headers
This motherboard supports
(2-pin CI1, CI2: see p.9, No. 23)
CASE OPEN detection feature
that detects if the chassis cover
has been removed. This feature
requires a chassis with chassis
intrusion detection design.
COM3, 4 Headers (RS232)
(9-pin COM3/COM4: see p.9, No. 26)
LPC Header
(19-pin LPC1)
(
see p.9, No. 9)
1
Signa
l
GN
D
1
GND
GND
S_PWRDWN#
LAD2
SMB_CLK_MAIN
PCICLK
PCIRST#
LAD3
+3V
LAD0
GND
FRAME
SMB_DATA_MAIN
LAD1
SERIRQ#
GND
+3VSB
48MHz
+5V
USB 3.0 Connector
There is one USB 3.0
(9-pin USB3_34)
connector on this
(see p.9 No. 6)
motherboard. This USB 3.0
connector can support two USB
ports.
1
ID
I
IntA_P_D-
GND
IntA
IntA_P_SSTX-
GND
IntA
Vbus
I
IntA_P_D-
GND
IntA
IntA_P_SSTX-
GND
IntA
IntA_P_SSRX-
Vbus
IntA_P_SSRX-
SPI Connector
(7-pin SPI1: see p.9, No. 18)
PIN
Signal
Name
PIN Signal
Name PIN
Signal
Name
PIN Signal Name
7
GND
5
CLK
3
SPI_MOSI
1
NC
8
+
3.3
V
6
SPI_CS#
4
SPI_MISO
2
SPI_HOLD1#
PIN Signal Name PIN Signal Name
1
DDCD#
2
RRXD
3
TTXD
4
DDTR#
5
GND
6
DDSR#
7
RRTS#
8
CCTS#
9
+5V / +12V
10
NC
2
1
For Update EEPROM BIOS
purpose only
