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COM (Serial) Ports
10
10
9
RI
N.C.
CTS
RTS
DSR
GND
N.C.
TXD-
DTR
TXD
DCD
RXD-
RXD
2
2
1
RS232
RS422
COM 2 : RS232/422/485
Mini PCIe Signal Select
(JP1)
LCD/Inverter Power Select
(JP2)
USB 2.0
Panel Power Select
(JP7)
COM1 RS232/Power Select
(JP6)
USB 11-12
USB 7-8
COM2 RS232/Power Select
(JP8)
2
10
2
PS/2
1
9
1
USB 5-6
2
(JP7)
1
(JP6)
2
USB 2.0
6
5
1
COM 2
COM 3 COM 4
(JP8)
10
9
10
9
10
9
2
1
2
1
2
1
2
1
COM1
VGA
Mini PCIe
ASMedia
CPU Fan
ASM1442
1
DVI-D
4
1 2 3 4 5
(DVI-I
Chassis
connector)
Intrusion
1
2
1
2
DP++
5
6
SMBus
6 7 8 9
LAN 1
USB 1-2
USB 3.0
COM 1 : RS232
Intel I211AT
LAN 2
USB 3-4
USB 3.0
3
1
+12V
Power
2
4
5
S/PDIF
1
System
1
3
Fan 2
Realtek ALC888S-VD2-GR
COM 3/COM 4: RS232
Chapter 5 Ports and Connectors
9
10
9
N.C.
N.C.
N.C.
N.C.
N.C.
GND
GND
N.C.
TXD+
N.C.
N.C.
RXD+
DATA+
DATA-
1
2
1
RS485
1
10
40
2
SATA 0
SATA 2
SATA 3
12
24
9
39
LVDS LCD Panel
1
3
1
1
1
SATA 3.0
6
SPI Flash
1
3
Backlight Power
5
BIOS
Auto
Select (JP3)
Standby
Power-on
(JP1)
(JP2)
Select
Power LED
6
1
1
(JP5)
5
LCD/Inverter
Power
11 12
1
8
Intel
14
13
Q170
2
1
LPC
System
Clear
Battery
Fan 1
1
13
CMOS
1
3
2
Data
1
3
1
(JP4)
Socket LGA1151
Buzzer
PCIe 1 (PCIe x16)
Chapter 5
COM 1, COM 3 and COM 4 are fixed at RS232. COM 2 can be selected among RS232, RS422
and RS485 via the BIOS setup utility.
The pin functions of COM 1 and COM 2 will vary according to JP6's and JP8's setting respec-
tively. JP6 and JP8 allow you to configure COM 1 and COM 2 to RS232 or RS232 with power.
Refer to "COM1/COM2 RS232/Power Select" in Chapter 4 for more information.
The serial ports are asynchronous communication ports with 16C550A-compatible UARTs that
can be used with modems, serial printers, remote display terminals, and other serial devices.
Connecting Extra External Serial Ports
Your COM port may come mounted on a card-edge bracket. Install the card-edge bracket
to an available slot at the rear of the system chassis then insert the serial port cable to the
COM connector. Make sure the colored stripe on the ribbon cable is aligned with pin 1 of the
COM connector.
BIOS Setting
Configure the COM ports 1/2/3/4 in the Advanced menu ("Super I/O" submenu) of the BIOS.
Please refer to Chapter 7 for more information.
1 2
Front
Panel
1
Digital
I/O
8
1
Digital I/O
Power
4
21
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