Supermicro X11SSN Series User Manual page 39

COM Ports
There are four COM ports (JCOM1: COM1/COM2 supports two RS232/RS422/RS485 and
JCOM2: COM3/COM4 supports two RS232) on the motherboard. Refer to the table below
for pin definitions.
Serial COM Ports (JCOM1)
Pin# Definition
DCD1
1 or RS-485/422_COM1_TX- (Full Duplex)
or RS-485_COM1_Data- (Half Duplex)
RXD1
3 or RS-485/422_COM1_TX+ (Full Duplex)
or RS-485_COM1_Data+ (Half Duplex)
5 TXD1 or RS-485/422_COM1_RX+ (Full Duplex)
7 DTR1 or RS-485/422_COM1_RX- (Full Duplex)
9 GND
DCD2
11 or RS-485/422_COM2_TX- (Full Duplex)
or RS-485_COM2_Data- (Half Duplex)
RXD2
13 or RS-485/422_COM2_TX+ (Full Duplex)
or RS-485_COM2_Data+ (Half Duplex)
15 TXD2 or RS-485/422_COM2_RX+ (Full Duplex)
17 DTR2 or RS-485/422_COM2_RX- (Full Duplex)
19 GND
SATA Port
The X11SSN-H/-E/-L has one SATA 3.0 port (I-SATA1).
FAN1
JHDMI1
JPW2
JPF1
JLCDPWR1
1
JCOM1:
COM1 COM2
Pin Definitions
Pin#
2
4
6
8
10
12
14
16
18
20
B2 B11
A12 A1
A4 A1
USB6(3.0)
A5 A9
B1
DP
B9
B5
USB4/5(3.0)
SRW1
SRW2
2
SRW3 SRW4
JCOM2:
COM3 COM4
39
Serial COM Ports (JCOM2)
Definition Pin# Definition
DSR1 1 DCD3
3 RXD3
5 TXD3
RTS1
7 DTR3
9 GND
11 DCD4
CTS1
13 RXD4
RI1_N
15 TXD4
N/A
17 DTR4
DSR2
19 GND
RTS2
CTS2
RI_N2
N/A
JD1
B1
JF1
B2
B11
A14
LAN2 LAN1
JGP1
PWR ON
RST
JF1
HDD LED
PWR LED
J2
J3
3
AUDIO FP
J4
JPH1 I-SATA1
BT1
Chapter 2: Installation
Pin Definitions
Pin# Definition
2 DSR3
4 RTS3
6 CTS3
8 RI3_N
10 N/A
12 DSR4
14 RTS4
16 CTS4
18 RI4_N
20 N/A
1. JCOM1
2. JCOM2
3. I-SATA1