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Internal I/O Connectors
X
COM (Serial) ports
JP4/2/3/1
(top to bottom)
USB 7/8
2
6
1
(USB 2.0)
5
1
5
2
6
+12V Power
1
5
2
6
1
5
2
6
VGA
1
5
HDMI
DP
LAN1
USB 1/2
(USB 3.2 Gen 2)
LAN2
USB 3/4
(USB 3.2 Gen 1)
USB 7/8/9/10
(USB 3.2 Gen 1)
Mic In
Line Out
Line In
Note
2280
2260
PCIE1 (PCIe x16)
PCI1
LAN LED
Buzzer
8
7
PCI2
2
1
1
2
J12
PCIE2 (PCIe x4)
2
Front
9
10
1
5
Audio
DIO Power
SYS FAN3
19
1
3
3
3
1
1
4
S/PDIF
2
1
1
1
JP13/11/25
Digital I/O (DIO)
(left to right)
„ COM Port Pin Assignment
Pin
RS232
with PWR
1
DCD-
2
SIN-
3
SO-
4
DTR-
5
GND
6
DSR-
7
RTS-
8
CTS-
9
RI-
User's Manual | CMS330-Q470E/H420E
SYS FAN1 CPU FAN1
DDR4_3
DDR4_4
1
1
9
1
J34
Battery
9
1
J35
2
14
13
LGA 1200
9
1
J36
2
1
9
1
LPC
J37
12
24
ATX
power
Standby
Power
LED
1
13
1
2
Front
Panel
11
SYS FAN2
M.2 M Key
1
SPI Flash
BIOS
2242
DDR4_1
DDR4_2
SATA0/1/2/3
(top to bottom)
1
3
JP5
HDDPWR
3
4
Intel
JP26
1
1
USB 3.2 Gen1
JP24
(USB 5/6)
H420E/Q470E
1
2
1
10
J10
SOJ2
5
6
9
1
1
1
9
1
20
11
M.2 E Key
USB 11/12
2230
9
1
(USB 2.0)
Note
COM 6
9
1
9
1
1
1
1
10
2
10
2
2
2
USB 9/10 (USB 2.0)
COM2/3/4/5
(top to bottom)
COM 2/3/4/5
from top to bottom
9
RS232
RS422
RS485
+12V
TXD-
Data-
RD
TXD+
Data+
TD
RXD+
---
DTR-
RXD-
---
GND
GND
GND
DSR-
---
---
RTS-
---
---
CTS-
---
---
5V
---
---
Connecting 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.
1
2
Chapter 2
HARDWARE INSTALLATION
25
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