20
COM2, 3 Headers
(9-pin COM2/COM3: see p.8, No. 2)
LPC Header
This connector supports a
(19-pin LPC1)
Trusted Platform Module (TPM)
(
see p.8, No. 23)
system, which can
securely store keys, digital
certificates, passwords, and
data. A TPM system also helps
enhance network security,
protects digital identities, and
ensures platform integrity.
PIN
RS232
RS422
RS485
1
DCD
TX-
RTX-
2
RXD
RX+
N/A
3
TXD
TX+
RTX+
4
DTR
RX-
N/A
5
GND
GND
GND
6
DSR
N/A
N/A
7
RTS
N/A
N/A
8
CTS
N/A
N/A
9
RI
N/A
N/A
10
NC
NC
NC
* This motherboard supports RS232/422/485 on COM3 port. Please
refer to below table for the pin definition. In addition, COM3 port
(RS232/422/485) can be adjusted in BIOS setup utility > Advanced
Screen > Super IO Configuration. You may refer to page 29 for details.
COM3 Port Pin Definition
PIN
Signal
Name
PIN Signal
Name PIN
Signal
Name PIN
Signal
Name
PIN
Signal
Name
10
NC
8
CCTS#
6
DDSR#
4
DDTR#
2
RRXD
9
RRI#
7
RRTS#
5
GND
3
TTXD
1
DDCD#
2
1
1
G
N
D
S
M
B
_
D
A
T
A
_
M
A
IN
L
A
D
2
L
A
D
1
G
N
D
S
_
P
W
R
D
W
N
#
S
E
R
IR
Q
#
G
N
D
P
C
IC
L
K
P
C
IR
S
T
#
L
A
D
3
+
3
V
L
A
D
0
+
3
V
S
B
G
N
D
F
R
A
M
E
S
M
B
_
C
L
K
_
M
A
IN
1
DC-in PWR Connector (Input +9V~+24V) &
Pin1 and Pin4: GND
UPS Module Power Output Connector
Pin2 and Pin3: DC Input
(4-pin FROM_UPS1: see p.8, No. 1)
